Question

5. At 25% per annum interest in how many years the simple interest on a sum of money triple itself? INV 2015) (1) 4 (3) 8 (4) 10 (2) 6​

Answer 1

Answer:

since we need 100 percent interest on 25 percent per annum

since 100=25×4

Therefore , it will take 4 years

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Answer 2

si = pnr

A = 3p

si =A-P = 3p-p =2p

2p = pnr

2 = n×0.25

n = 2/0.25 =8years

answer: 3