Question
A number is increased by 45% and then decreased by 30%.
What is the overall percentage change (increase or decrease) in the number?Solution
Let the number be '100y' Final number = 1.45 X 0.7 X 100y = 101.5y Therefore, percentage increase = [(101.5y - 100y) ÷ 100y] = 1.5%
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.)...
If the difference between the compound interest (compounded annually) and the simple interest accrued over two years at a rate of...
√ 27556.11 × √ 624.9 – (22.02) 2 =? × 5.95
(27.08)2 – (14.89)2 – (22.17)2 = ?
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 will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
‘A’ and ‘B’ can build a wall in 8 days and 12 days, respectively. If ‘A’ started building the wall alone but after 4 days he was replaced by...
- 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.)
74.856% of 639.98 - 15.098 of √145 = ? of 14.972
11.89 × 2.10 × 4.98 × 4.03 ÷ 7.98 of 15.03 = ?
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