Question

Daria can wash and detail 3 cars in 2 hours. Larry can wash and detail the same 3 cars in 1.5 hours. About how long will it take to wash and detail the 3 cars Daria and Larry worked together?

Answer 1

D----3/2 cars---1 hour
L---3/1.5 cars---1 hour
D+L-----3/2 + 3/1.3 cars ------1 hour
=7/2 cars
so D+L -------1 car in 2/7 hours
-------3 cars --------2/7*3=6/7 hours

Answer 2

ok thanks

Answer 3

wels

Answer 4

in the form of minutes what would that fraction be?