Question
Monthly income of A is Rs. 3500 and he saves 42% of his
monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is increased by 35% then find the increase or decrease in his monthly income.Solution
Monthly savings and expenditure of A initially is Rs. 1470 and Rs. 2030, respectively. Monthly expenditure of A now = 0.65 × 2030 = Rs. 1984.5 Monthly savings of A now = 1.35 × 1470 = Rs. 1319.5 Monthly income of A now = 1984.5 + 1319.5 = Rs. 3304 Desired percentage decrease = [(3500 – 3304)/3500] × 100 = 5.6%
- 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.)
? = 41.92% of 49.96% of (45.07 1.97 – 4.98 2.03 )
(15.15 ×  31.98) + 30.15% of 719.99 = ? + 124.34
15.2 x 1.5 + 258.88+ ? = 398.12 + 15.9
784.69 + 86.96 ÷ 29.01 = 40.01 + ? + 367.88
(29.892 × √290) + 32.98 × 6.91 = ?
(15.87% of 79.98 + 19.69% of 64.22) × 4.83 = ?
 (3/5) of 3025 + (18² + 12²) = ? + 22.22% of 1125
24.75% of 20.125% of 30.05% of 2196.06 = ?Â
(799.81/64) ÷ (10/799.92) × (129.84/130) = ?
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