Renee can sew a 25-square-foot quilt in 16 hours. Genera can sew the same size quilt in 12 hours. How long would it take them to sew the quilt working together?

Answer 1

1/16 +1/12 =1/x

3x +4x = 48

x =48/7 = 6 6/7 hours = almost 7 hours working together

16+12 = 28

28/2 = 14 hours average for both

14/2 = 7 hours = about how much time working together