Quantitative Aptitude

General Questions

1.  A does a work in 10 days and B does the same work in 15 days. in how many days they together will do the same work?
A. 5 days
B. 6 days
C. 8 days
D. 9 days
2.  A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for ₹ 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
A. ₹ 375
B. ₹ 400
C. ₹ 600
D. ₹ 800
3.  A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
A. 12 days
B. 15 days
C. 16 days
D. 18 days
4.  A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :
A. 1/4
B. 1/10
C. 7/15
D. 8/15
5.  A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in:
A. 20 days
B. 221/2 days
C. 25 days
D. 30 days
6.  A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in:
A. 91/5 days
B. 92/5 days
C. 93/5 days
D. 10 days
7.  A can do a piece of work in 30 days while B can do it in 40 days. In how many days can A and B working together do it ?
A. 70 days
B. 423/4 days
C. 271/7 days
D. 171/7 days
8.  A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in ?
A. 3 days
B. 5 days
C. 7 days
D. 11 days
9.  A can do  of a work in 5 days and B can do  of the work in 10 days. In how many days both A and B together can do the work ?
A. 73/4 days
B. 84/5 days
C. 93/8 days
D. 10 days
10.  A and B can do a piece of work in 18 days, B and C in 24 days, A and C in 36 days. In what time can they do it all working together ?
A. 12 days
B. 13 days
C. 16 days
D. 26 days

Overview

Exercise