William and amy are stuffing envelopes for a charity. today William stuffed a total of 70 envelopes. this was 10 more than twice the number of envelopes that amy stuffed. how many envelopes did amy stuff?
william stuffed 70 W=70 this was 10 more than (+10) twice the number of envelopes (2a) amy stuffed W=10+2A find A W=70 70=10+2A subtract 10 from both sides 60=2A divide both sides by 2 30=A amy stuffed 30 envelopes
