Question
Ram can finish a task alone in 45 days, whereas Ram and
Rahul working together can complete the same task in 12 days. If Rahul works on the task alone for 9 days, what percentage of the task will he complete?Solution
Let the total work = L.C.M of 45 and 12 = 180 units Then, efficiency of Ram = 180 ÷ 45 = 4 units/day Combined efficiency of Ram and Rahul = 180 ÷ 12 = 15 units/day So, efficiency of Rahul alone = 15 - 4 = 11 units/day Work done by Rahul in 9 days = 11 X 9 = 99 units So, percent of work completed = (99/180) X 100 = 55%
What will be the approximate value of the following questions.
(1/2 of 959.90 + 69.69% of 359.79) ÷ (√63.94 × 2/5 of 250.14) = ?
79.99% of (84.89 × 5.99) - (3.89)2 × 21.87 = ?
15.1 + 3.97 – 9.07 × 1.96 = √?
`sqrt(7.987 X 24.790 +199.991)`
Find the value of ‘x’ in the given expression:[144 + {2 × (13 ÷ 0.5 × 6 – 3) ÷ 4} – 6.5] = x
- 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.)
(1800.23 ÷ 29.98) + (816.32 ÷ 23.9) + 1634.11 = ?
At a village trade fair a man buys a horse and a camel together for Rs 51,250. He sold the horse at a profit of 25 % and the camel at a loss of 20 %. If...
15.232 + 19.98% of 649.99 = ? × 4.99
