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1 Man can do a work =6×12=72days 1woman Can do a work =8×18 =144days 1 child can do a work = 18×10=180days Now- (4men+12men+20children) can do a work in 2days = (4/72+12/144+20/180)2 = (1/18+1/12+1/9)2 = (9×2/36) =1/2 72 men can do a work in 1 day. The remaining ½ work can be done in a 1 day = 36men
The certain sum amounts to Rs 9,982.50 in 2(1/2) years at 12% p.a., interest compounded 10-monthly. The sum (in Rs) is:
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.
A sum of money amounts to Rs.767 in 3 years, and to Rs.806 in 4 years on simple interest at 6% annum. What is the sum?
A sofa of MRP 450 is available in Rs.90 cash down payment and 9 monthly equal installment of Rs.45 each. Find the rate of interest per annum.