Question
14 boys can do a work in X days and 22 girls can do the
same work in (X + 10).The ratio of work done by 7 boys and 9 girls in the same time is in the ratio 7 : 3. Find the value of X.Solution
7b/9g = 7/3 {b = boys, g= girls} ⇒ 21 b = 63 g ⇒ 1b = 3 g ∴ 14 ×X × 3 = 22 × (X + 10) × 1 42X = 22X + 220 20X = 220 ∴ X = 11 days.
? = 29.91% of 49.94% of ((56.25 × 4.09 + 23.01 × 7.89) × 99.98)
125.9% ÷ 9.05 x 99.98 = ? - 69.97 × √324.02 ÷ 5.98
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
- 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.)
The ratio of cost price to the marked price of an article is 5:8. The article had been marked above its cost price by Rs. 270. If the article was sold a...
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.)...
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 replace the question mark?
19.98% of 500.05 + ?% of 400.02 = 259.97
What approximate value should replace the question mark?
12.45% of 640.20 − 60% of 2500 = ? − 9000.10
