Question
If a group of 12 boys and 18 girls together can complete
a task in 24 days, and a team of 6 girls alone can finish the same task in 96 days, how long will it take for 48 boys to finish the entire task on their own?Solution
ATQ;
Task done by 6 girls in 1 day = 1/96
Task done by 18 girls in 1 day = 3/96 = 1/32
Task done by 12 boys = 1/24 – 1/32 = 1/96
Task done by 48 boys = 4/96 = 1/24
Hence, required time = 24 days
- 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.)
Find the approximate value of Question mark(?). No need to find the exact value.
(575.86 ÷ 24.03) × (35.96 ÷ 6.03) + √(255.76) = ?
...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.)...
456 x 99.999 + 654 = ?
?% of 309.99 = 40.01% of 249.99 + 295.98% of 49.99
56237.05 + 10616.99 - 137.25 + 1795.33 = ?
620.15 + 1279.98 + ? × (4.79)2 = 149.95% of 1600.14
`(13.022)^(2)+ (42.93)^(2)-(53.125)^(2)+(192.33xx14.88)=?- (88.44)^(2)- (42.03 xx 23.12)`
