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Q:
While purchasing one item costing Rs.400, one has to pay sales tax at 7 % and on another costing Rs. 6400, the sales tax was 9%. The percentage of sales tax one has to pay, taking these items together on an average is:
1073 0

Answer : 4. " "

Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1466 0

Answer : 2. "45 yrs"
Explanation :
Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _(I) and (x+y)/2 = 30 => x+y = 60 years____(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.

Q: Average height of 40 girls is 148 cm. Average of remaining number is 150 cm. What will be the average of total class if there are 50 girls in the class? 1869 0

Answer : 3. "148.4 cm"
Explanation :
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Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1276 0

Answer : 4. "1 years"

Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1242 0

Answer : 4. "4"
Explanation :
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Q:
The average per day income of A, B and C is Rs. 450. If the average per day income of A and B be Rs. 400 and that of B and C be Rs. 430, the per day income of B is:
1651 0

Answer : 2. "Rs . 310 "

Q:
If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is:
917 0

Answer : 2. "54.68 "

Q:
Average of 21 number is 36. If the average of first 12 numbers is 15, then find the average of remaining 9 number?
870 0

Q: While purchasing one item costing Rs.400, one has to pay sales tax at 7 % and on another costing Rs. 6400, the sales tax was 9%. The percentage of sales tax one has to pay, taking these items together on an average is: 1073 05f2a83f47079852b553cf6d8

Answer : 4. " "

Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1466 05b5cc6c9e4d2b4197774df83

Answer : 2. "45 yrs" Explanation :Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _______(I) and (x+y)/2 = 30 => x+y = 60 years__________(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.

Q: Average height of 40 girls is 148 cm. Average of remaining number is 150 cm. What will be the average of total class if there are 50 girls in the class? 1869 05d19cd2c1388cd24f0860eea

Answer : 3. "148.4 cm" Explanation :undefined

Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1276 05d19d2be1388cd24f0860ef5

Answer : 4. "1 years"

Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1242 05d19dc981388cd24f0860f15

Answer : 4. "4" Explanation :undefined

Q: The average per day income of A, B and C is Rs. 450. If the average per day income of A and B be Rs. 400 and that of B and C be Rs. 430, the per day income of B is: 1651 05dcba2f445ad6b59c82d8685

Answer : 2. "Rs . 310 "

Q: If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is: 917 05f2a4aae57c6a23ea65cf8ed

Answer : 2. "54.68 "

Q: Average of 21 number is 36. If the average of first 12 numbers is 15, then find the average of remaining 9 number? 870 0601907c065f047590381a6ca

Answer : 1. "64"

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Q:
While purchasing one item costing Rs.400, one has to pay sales tax at 7 % and on another costing Rs. 6400, the sales tax was 9%. The percentage of sales tax one has to pay, taking these items together on an average is:
1073 0

Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1466 0

Answer : 2. "45 yrs"
Explanation :
Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _(I) and (x+y)/2 = 30 => x+y = 60 years____(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.

Q: Average height of 40 girls is 148 cm. Average of remaining number is 150 cm. What will be the average of total class if there are 50 girls in the class? 1869 0

Answer : 3. "148.4 cm"
Explanation :
undefined

Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1276 0

Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1242 0

Answer : 4. "4"
Explanation :
undefined

Q:
The average per day income of A, B and C is Rs. 450. If the average per day income of A and B be Rs. 400 and that of B and C be Rs. 430, the per day income of B is:
1651 0

Q:
If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is:
917 0

Q:
Average of 21 number is 36. If the average of first 12 numbers is 15, then find the average of remaining 9 number?
870 0