Aman lends 50% of his sum of money at 17% per annum, 40% of rest at 12% per annum and the rest at 15% per annum rate of interest. What would be the annual rate of interest, if the interest is calculated on the whole sum?
Let the person have Rs. 100 Then SI for 1 year = Rs. [(50 × 17 × 1)/100 + (20 × 12 × 1)/100 + (30 × 15 × 1)/100] = Rs. (8.5 + 2.4 + 4.5) = Rs. 15.4 ∴ Rate of interest on whole sum = 15.4%
31.98% of 224.99 = 24.98% of ? + 9.91% of 499.99
420.11 ÷ 13.98 × 5.14 – 124.9 = √?
41.97 × 5.12 ÷ 2.99 + 49.89 = ?× 1.99
630.11 ÷ 20.98 × 5.14 – 125.9 = √?
A motor boat goes downstream from point A to B ,which is 36 km away from point A, and then returns to A. If actual speed of the boat in still water is 7...
(98.999)2 - (9.9)2 - (14.9)2 = ?
(2744)1/3 × 10.11 × 5.97 ÷ 14.32 = ?+ 15.022
P spends 20% of his monthly income in travelling. He spends 25% of his monthly income on household expenses and spends 15% of his monthly income on fami...
{(84.04% of 649.95 + 27.92 × 13.13) – 21.11 × ?} = 763.35
