Travis needs to mail 4 letters and 10 postcards. A letter needs a 37-cent stamp and a postcard needs a 25-cent stamp. How much money will Travis spend for postage?

398-cent stamp for postage.

Step-by-step explanation:

For one letter, Travis needs 37-cent stamp

For four letters, Travis needs 37-cent stamp x 4 letters

= 148-cent

Again,

For one postcard, he needs 25-cent stamp

For ten postcards, he needs 25-cent stamp x 10 postcards

= 250-cent

Therefore, he will spend = (148-cent + 250-cent) = 398-cent stamp for postage.