In a class,the number of boys and girls are in the ratio 4:5. If 10 more boys join the class,the ratio of numbers of boys and girls become 6:5. How many girls are there in the class?
If sohail walks from his home to office at 16km/hr.he is late by 5 min.If he walks at 20km/hr.he reaches 10 min before the office time. Find the distance of his office from his home?
3 men can do a piece of work in 6 days, 5 women can do the same work in 18 days. If 4 men and 10 women work together, then how long will it take to finish the work.
a- 3 days
b- 5 days
c- 2 days
d- 4 days