132, 148, 164, 128, 120, 136
1095 060336416ed952b1532dcf96560336416ed952b1532dcf965Answer: 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.
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There are 45 male and 15 female employees in an office. If the mean salary of the 60 employees is Rs 4800 and the mean salary of the male employees is Rs 5000, then the mean salary of the female employees is
2196 05de49793848f4a29cf45b0deThe average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class?
1229 05f2a5f24cef453383f1e38adThe average of 19 numbers is 24. If each number is multiplied by 3, what is the new average?
982 0603741dc9792c13b28582120