If 36 persons can finish 50% of work in 12 days In how many days 72 person can finish the complete work?
let the total work =1 M1 D1 H1/W1 = M2 D2 H2/W2 36×12 /(1/2) =72×D2 /1 D2 =12days.
Simple interest on a certain sum at the rate of (50/3)% per annum for three years is Rs. 1250. Find the sum.
If a sum when placed at compound interest grows to Rs.6,400 in 2 yrs and to Rs. 8,000 in 3 yrs, find the rate percent p.a.
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