IBPS Government Jobs Exams Numerical Ability Time and Work

2 employees and 3 trainees together can finish a project in 7 days, 6 employees and 13 trainees together can finish the same project in 2 days. Find the time taken by 4 employees and 4 trainees together to finish the same work.
A) 5 days B) 8 days C) 4 days D) 6 days E) 7 days

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IBPS Other Question

The simple interest on a certain sum for 2 years at a certain rate of interest is Rs. 2000 and compound interest on the same sum, same time and same rate of interest is Rs. 2050. Then find the ratio between C.I. for 2 years and C.I. for 3 years?
A) 820 : 1361 B) 820 : 1261 C) 1261 : 820 D) 1361 : 820 E) None of these Present age of Rakesh is 100/3% of the age of his father and his father is half of the age of his grandfather. The average of the present ages of all of them is 110/3 years. What was the ratio of their ages 10 years ago?
A) 11 : 33 : 66 B) 1 : 43 : 56 C) 21 : 43 : 76 D) 1 : 23 : 56 E) 1 : 26 : 56