Question
A, B, and C can together complete a task in 12 days. A
and B can complete the same task in 16 days, and B and C can complete it in 20 days. In how many days will A, B, and C together complete the task if A works alone for the first 5 days?Solution
Let the total work be W. From the given data: 1/A + 1/B + 1/C = 1/12, 1/A + 1/B = 1/16, 1/B + 1/C = 1/20. Solving these, we find: 1/A = 1/30, 1/C = 1/48, and 1/B = 7/240. Now, A works alone for the first 5 days, so work done = 5 * 1/30 = 1/6. Remaining work = W – 1/6 = 5/6. Now, A, B, and C work together, so time taken = 5/6 / (1/12) = 10 days Correct Option: b)
If total sales of cars of all brands together increases by 10% in 2018 and the the sales of Santro in Maharshtra increased by 15% keeping percentage dis...
By what per cent should the sales of Santro be increased so that its sales volume in Maharashtra becomes 18000, while in all other states remaining the ...
If Worker E works alone for 15 days, how many units of the project will remain incomplete after this period?
The total sales of Bolero, Tata Indica and Baleno together in 2017 is approximately what per cent of the total sales of Santro in all states together...
Study the given graph and answer the question that follows.
...If total sales of shoes of all brands together increases by 15% in 2018 and the sales of Nike in Nasik increases by 10% keeping percentage distribution ...
In which of the following year, the ratio of unit consumption to the no. of consumers is maximum?
What was the difference between the number of petrol cars in perfect conditions of Hyundai & that of Ford?
The total sales of Fila, Adidas and Woodland in 2017 is approximately what percent of the total sales of Nike in all cities together in 2017?
The number of defective Cars manufactured by Honda Company is what percent of the number of defective Cars manufactured by Ford Company?
Relevant for Exams:
