Question

A stamp collector bought 160 stamps for $25.00. The purchase included 5¢ stamps, 15¢ stamps, and 25¢ stamps. The number of 15¢ stamps is three times the number of 5¢ stamps. How many of each type of stamp was purchased?

Answer 1

So the number 15 cent stamps is 3 x the number of 5 cent stamps

Answer 2

so here we have
5cen+15cent+25cent=160

Answer 3

let number of 5cent stamp is x so find x

Answer 4

as 15 is 3 times of 5

Answer 5

gottcha

Answer 6

so 25 will be 5 times of 5cent

Answer 7

now
x+3x+5x=160

Answer 8

ohh okay!

Answer 9

want to try ?

Answer 10

yeah i will try in a bit. i have to go do something! im going to see if i could get openstudy on my phone! thx

Answer 11

np :)

Answer 12

okay i have 5 minutes, so what do i need to plug in?

Answer 13

i still need help :(