TCS
Company
Category
1. Tony alone can paint a wall in 7 days and his friend Roy alone can paint the same wall in 9 days. In how many days they can paint the wall working together? Round off the answer to the nearest integer.
a. 3
b. 4
c. 5
d. 7
Read Solution (Total 2)
-
- b. 4
Together will complete the work in 1/[(1/7)+(1/9)=1/(16/63) =63/16= Approx.= 4 - 9 years agoHelpfull: Yes(3) No(0)
- 1/7 +1/9 = 3.9 =approx.=4
- 9 years agoHelpfull: Yes(0) No(0)
TCS Other Question