Question
A and B can each finish a task in 32 days and 36 days
respectively. They begin the task together, but after 12 days, A leaves. How long will it take for B to complete the remaining work alone?Solution
Let total amount of work = 288 units (LCM of 32 and 36) Amount of work done by A in one day = 288/32 = 9 units Amount of work done by B in one day = 288/36 = 8 units Amount of work done by A and B together in 12 days = 12 × 17 = 204 units Remaining work = 288 – 204 = 84 units Desired time = 84/8 = 10.5 days Hence, option c.
342 – 232 + 256 – 104 = ?
14 × 11 + 25 – ? = 21% of 300
2850 ÷ 2.5 - ? × 42 = 300
What will come in the place of question mark (?) in the given expression?
(72 × 6 ÷ 12) × 6 = ?
Find the value of 325 × 5 + 31 × 21 – 22 × (63 − 52).
√? = 80% of 720 - 22% of 2500
5555 ÷ 11 ÷ 5 = 100 + ?
- What will come in place of (?) in the given expression.
[45 + (36 ÷ 6)] × 2 – 10 = ? (23.95)2 – (25.006)2 + (8.0099)2 – (7.07)2 = ? - (14.990)2
If a³ - b³ = (a - b)(a² + ab + b²), find a³ - b³ when a = 10 and b = 4.
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