Question
Anoop and Bhanu together can finish a certain piece of
work in 90 days, while Bhanu and Charu together can complete the work in 70 days. Bhanu, Charu, and Danny together can finish the work in 42 days. In how many days can Anoop alone complete 40% of the work if Danny is 20% more efficient than Charu?Solution
ATQ, Let Anoop, Bhanu, Charu and Danny can be defined as A, B, C and D respectively. Let the total work be 630 units. (LCM of 90, 70 and 42) Amount of work done by A and B together in one day = 630/90 = 7 units Amount of work done by B and C together in one day = 630/70 = 9 units Amount of work done by B, C and D together in one day = 630/42 = 15 units Amount of work done by D alone in one day = 15 – 9 = 6 units Amount of work done by C alone in one day = 6/1.20 = 5 units Amount of work done by B alone in one day = 9 – 5 = 4 units Amount of work done by A alone in one day = 7 – 4 = 3 units Time taken by A alone to complete 40% work = 0.40 × 630/3 = 84 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)
