In how much time compound money at compound interest of half yearly rate of Rs 800 will be Rs 926.10?
(A)
(B)
(C)
(D)
What will be the difference between the compound interest and simple interest of 2 years at the rate of 5 percent annual interest at Rs. 4,000?
(A) 10
(B) 11
(C) 20
(D) 100
7 years ago, the ages of A and B were in the ratio of 4: 5 and after 7 years they would be in the ratio of 5: 6. The present age of B is-
(A) 56 years
(B) 63 years
(C) 70 years
(D) 77 years
At present, the sum of the ages of A, B and C is 150 years, whereas 10 years ago, the ratio of their age was 5:4:3. Find the ratio of their ages 10 years hence.
(A) 7 : 5 : 3
(B) 7 :6 :5
(C) 4 : 3 : 5
(D) 6 : 9 : 5
A tap drips at a rate of one drop/sec. 600 drops make 100ml. The number of litres wasted in 300 days is:
(A) 43200 litres
(B) 4320 litres
(C) 4320000 litres
(D) 432000 litres
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