Question
Working alone, B can complete the work in 16 days. C is
twice as efficient as B and A takes 4 days more than it takes C to complete the work. Working together, in how much time would they be able to complete 13 such works?Solution
Time taken by B to complete the work = 16 days Time taken by C to complete the work = 16/2 = 8 days Time taken by A to complete the work alone = 8 + 4 = 12 days Work done by A, B and C together in 1 day. ⇒ (1/16 + 1/8 + 1/12) = (3 + 6 + 4)/48 = 13/48 this means if would take 48/13 days for A, B and C to complete the work together ∴ Time taken A, B and C to complete 13 works = 13 × 48/13 days = 48 days
Chairperson of the Food Authority should be well versed in the field of:
Which of the following is the function of food safety officer?
Which soil structure is considered as best for cultivation
The Normal lapse rate is ________’ C per Km.
Which poultry breed has highest weight at the age of 5 weeks?
Which of the following statements are correct about “Jhum cultivation”
- It is the primitive form of agriculture pract...
What will be the effect of tillage on the thermal conductivity of soil?
Given below are two statements
Statement I: In case of pre-emergence herbicides less droplet size is effective and for post emergence herbici...
Vapour Heat Treatment (VHT) is generally used in:
There is a mutual antagonistic effect on the uptake of K, Ca & Mg. What is the ideal ratio of K, Ca & Mg for Groundnut?