Question
Monthly income of A is Rs. 6500 and he saves 36% 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
Given Data: Monthly Income = Rs. 6500 Savings (36%) = Rs. 2340 Expenditure = Rs. 4160 (Income - Savings) Changes: Expenditure decreased by 35% → New Expenditure = 4160 - 35% of 4160 = Rs. 2704 Savings increased by 35% → New Savings = 2340 + 35% of 2340 = Rs. 3159 New Income: New Income=New Expenditure + New Savings = 2704+3159=5863 Change in Income: Change Change=5863−6500=−637 Income decreased by Rs. 637.
Train 'P' travels at a speed of 45 km/h and crosses train 'Q' in 15 seconds while moving in opposite directions. Determine the speed of train 'Q' if the...
? = (7.11/2.12) + (10.88/4.09) + (45.12/11.98)
24.99 × 32.05 + ? - 27.01 × 19.97 = 29.99 × 27.98
24.99 × 32.05 + ? - 27.01 × 19.97 = 29.99 × 27.98
- 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.)
What approximate value should come in the place of (?) in the following questions?
9.9 * [? – (4.9 * √576 ÷ 7.80)] = 950.05
(27.08)2 – (14.89)2 – (22.17)2 = ?
( 1000)1/3  × 10.11 × 4.97 ÷ 10.32 =? – 15.022
1649.98 ÷ 15.48 × 8.12 = ? × 8.16
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