5% income of A = 15% income of B. Ratio of incomes A: B ____. A. 1:3 B. 3:1 C. 2:5 D. 5:2 Explanation: Cross multiply.
421 × 0.9 + 130 × 101 + 10000 = ____. A. 33500 B. 23500 C. 22500 D. 24500 Explanation: Compute stepwise.
40% of a number exceeds 20% of 650 by 190. Find the number ____. A. 600 B. 700 C. 800 D. 900 Explanation: Solve a linear Equation.
40 is subtracted from 60% of a number, and the result is 50. Find the number ____. A. 150 B. 140 C. 130 D. 110 Explanation: 0.6x − 40 = 50.
20% of 40 + ?% of 80 = 120. Find? A. 140 B. 120 C. 160 D. 180 Explanation: 8 + (x% of 80) = 120 → x = 140.