Please answer this question in the description.

Question

It costs $0.05 to send a text message and $0.10 to send a picture on your cell phone. You spend $4 and send five more text messages than pictures. How many text messages, x, and pictures, y, did you send?

Answer 1

t = # texts

p = # pictures

 

.05t + .1p = 4

t = p + 5

 

Using substitution:

.05(p+5) + .1p = 4

.05p + .25 + .1p = 4

.15p + .25 = 4

.15p = 3.75

p = 3.75/.15

p = 25 pictures

t = p+5 = 30 texts