Question
K and L can complete a work in 16 days. If K alone can
complete it in 48 days, how long will L take to complete the work alone?Solution
Let the total work be 48 units. {LCM (16 and 48)}
So, combined efficiency of 'K' and 'L' = 48 ÷ 16 = 3 units/day
Efficiency of 'K' = 48 ÷ 48 = 1 unit/day
So, efficiency of 'L' = 3 - 1 = 2 units/day
So, time taken by 'L' to do the work alone = 48 ÷ 2 = 24 days
What approximate value should replace the question mark?
12.45% of 640.20 − 60% of 2500 = ? − 9000.10
`[(7.99)^2 - (13.001)^2 + (4.01)^3]^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 value should come in place of question mark (?) in the following question. (You need not to calcualte the exact value)
?/647 = 226/ ?
- 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, B & C have Rs.1550 together. If they divide the money in the ratio 1:3:1 respectively. Find the difference of amount received by B and C.
What approximate value should come in the place of (?) in the following questions?
∛(92.8 + √1025) * ? = 16.06% of 750
√1024.21 × √624.89 ÷ 4.98 + 11.99 × 4.01 = ?
√784 × 3 + (713.99 ÷ 6.98) = ?% of 619.99
11.11% of (123.45 + 234.56) + 10.01³ - (5.05 of 7.07) = ? of (88.88 - 33.33)
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