Question
It takes a team of either 20 boys or 35 girls, 27 days
to achieve a sales target. How many days will it take for a team consisting of 21 boys and 42 girls to complete the entire sales target?Solution
ATQ, Let efficiency of a boy and a girl be 'b' units/day and 'g' units/day, respectively. According to question, 20b = 35g 4b = 7g Total amount of targets = 20b × 27 = 540b units 21 boy and 42 girls = 21b + 42g = 21b + 6 × 7g = 21b + 24b = 45b Hence Desired time = (540b/45b) = 12 days
What will come in the place of question mark (?) in the given expression?
√(? - 212) - 84 = 81 - 13 X 9
Evaluate: 18 ÷ 3 × 4 + 6 − 5
7(1/2) – 3(5/6) = ? − 2(7/12)
`2(1/3)` + `4(1/4)` + `4(2/3)` + `8(7/6)` + ? = `4(3/5)xx4(1/2)`
...89 ÷ 512 × (1/64) = (23)?
What should come in place of the question mark (?) in the following question?
2 – [6 – {3 + (–4 + 5 + 1) × 8} + 12] = ?
The value of 15 × 14 – 30 + (32 + 17) is:
1440 ÷ 12 + 540 ÷ √36 + ? = 180 * 3
[(15)³ × (8)²] ÷ (90 × 6) = ?²
What will come in place of the question mark (?) in the following question?
24.30% of 372.32 = ?
