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Time taken by B to complete the work = 25 – 5 = 20 days Let the total work = 100 units Efficiency of A = 100/25 = 4 units/day Efficiency of B = 100/20 = 5 units/day Required time taken = 0.90 x 100/(4+5) = 10 days
A number is increased by 20% and then decreased by 20%. What is the net effect on the number?
An item priced at Rs. 1,500 has a markup of 36% on its cost price and is sold with two successive discounts: the first being 15% ...
A triangular prism has a triangular base with a height of 6 cm and a base length of 8 cm. If the height of the prism is 10 cm, what is the volume of the...
A can complete a work in 30 days, B in 24 days, and C in 20 days. A, B, and C work together for 5 days, after which B and C leave. How many more days wi...
Which component of a computer is responsible for managing and coordinating various hardware components?
From a group of 7 men and 4 women, in how many ways can a committee of 4 be formed such that it includes at least one woman?
A rectangle has a perimeter of 60 cm, and the ratio of its length to its width is 3:2. Find the length of its diagonal.
1153, 1206, ?, 1326, 1393, 1464
