5( 10 M+ 20 W)=3500
Solving we can get:
M=18
W=26
So we can find
Days =1060/6M+4W=5 days
A clock only with only dots marking 3, 6, 9 and 12 positions has been kept upside down in front of mirror. A person reads the time in the reflection of the clock as 4.50. What is the actual time?
A train moving at speed of 90 km/hr crosses a pole in 7 seconds. Find the length of the train.