Question
Quantity I: The price of rice is decreased by 30%, by
how much % the consumption is increase so that the expenditure will decreased by 10%? Quantity II: A man spends Rs. 45,600 out of his income 68,400. If his income and expenditure are increased by 19% and 13%. Find the percentage change in his savings.Solution
Quantity I: Let expenditure = 100    Price = 70    New expenditure = 90 ∴ Required % = (90-70)/70 × 100 = 28*4/7 % 
85.22 of 499.98% + 299.99 ÷ 30.18 = ?
783 ÷ 42.59 × 25.86 =?
118.95 – 24.10 + (91.90 ÷ 22.89 × 12.14) = ?
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.)<...
(31.9)3 + (34.021)² - (16.11)3 - (42.98)² = ?
? = 16.08 + 13.99 × 25.07
(23.99)2 – (17.99)2 + (1378.88 + 44.88) ÷ ? = 607.998
25.31% of 5199.90 + (19.9 × 17.11) + 46.021 =? + 168.98
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.)...
?% of (144.31 ÷ 17.97 × 60.011) = 239.98
