Find the difference of CI and SI on a sum of Rs. 30240 invested for 3 years at rate of interest per annum.
(A) Rs. 2500
(B) Rs. 2440
(C) Rs. 2660
(D) Rs. 3120
A sum of money amounted to Rs.720 in 2 years and Rs.792 in 3 years when interest is compounded annually. The annual rate of interest , (in%) is:
(A) 5%
(B) 7.50%
(C) 7%
(D) 10%
The average age of x and y is 18 years. If z is equal to 9 years the average of x, y and z is -
(A) 24 years
(B) 15 years
(C) 18 years
(D) 20 years
The age of a mother 10 years ago was thrice the age of her son. 10 years hence, the mother's age will be twice that of 9 her son. The ratio of their present ages is :
(A) 12 : 5
(B) 6 : 1
(C) 7 : 3
(D) 4 : 2
20 buckets of water fill a tank when the capacity of each bucket is 14.5 litres. How many buckets will be required to fill the same tank if the capacity of each bucket is 10 litres?
(A) 31
(B) 29
(C) 32
(D) 30
Water flows into a tank which is 200 m long and 150 m wide, through a pipe of cross-section (0.3m x 0.2m) at 20 km/h. In what time will the water level be 8 m?
(A) 450
(B) 500
(C) 200
(D) 250
(E) 350
23+ 3+33+333+3.33=?
(A) 395.33
(B) 372.33
(C) 702
(D) 702.33
What is the value of X ?, if 7580 - X = 3440
(A) 4150
(B) 5140
(C) 4130
(D) 4140
A man can row with the stream at 9 km/hr. and against the stream at 3 km/hr. His speed in still water is -
(A) 12 km/hr
(B) 5 km/hr
(C) 10 km/hr
(D) 6 km/hr
A swimmer can swim 68 km downstream and 45 km upstream in 9 hours and he will take 2 hours more to swim 51 km downstream and 72 km upstream. Find the speed of the swimmer in still water.
(A) 17
(B) 15
(C) 13
(D) 9
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