Timothy has hired Cynthia and Dominic to cover the roof with shingles Dominic can install 180 shingles in the same time it takes Cynthia to install 150 shingles, which can be shown using the following
relationship where d and care the respective rates for Dominic and Cynthia
180
150
C
Also, Dominic can install 10 shingles more per hour than Cynthia
How many shingles can Cynthia install per hour?
a.) 60 shingles per hour
b.) 50 shingles per hour
c.) 40 shingles per hour
d.) 70 shingles per hour