Question
The average weight of A, B, C is 76 kg when D joins them
the average weight becomes 70 kg. If E whose weight is 2 kg more than D replaces A, then the average weight of B, C, D and E become 69 kg. Find the weight of A.Solution
Sum of weight of A, B and C = 76 × 3 = 228 kg Sum of weight of A, B, C and D = 70 × 4 = 280 kg Weight of D = 280 – 228 = 52 kg Weight of E = 52 + 2 = 54 kg Sum of weight of B, C, D, E = 69 × 4 = 276 kg Weight of (B + C) = 276 – 52 – 54 = 170 kg Weight of A = 228 – 170 = 58 kg
564.932 + 849.029 – 425.08 = 612.095 + ?
999.99 + 99.99 + 99= ?
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
³√? × 33.97 + 59.99 × 28.9 – 48.98 × 21.42 = 1085.344
1279.98 ÷ 40.48 × 10.12 = ? × 2.16
(124.901) × (11.93) + 219.95 = ? + 114.891 × 13.90
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
