Question

two customers went to the post office to buy postcards and large envelopes. each postcard costs the same amount. each large envelope costs the same amount. the first customer paid $12 for 14 postcards and 5 large envelopes. The second customer paid $24.80 for 10 postcards and 15 large envelopes. write and solve the system of equations.

Answer 1

Let P represent postcards

Let E represent envelope

Therefore;

14 postercards plus 5 envelopes cost $12, implies

14P + 5E