How much money did he spend?

Question

Humberto had $1700 in a savings account to use for spending money during his summer trip to Mexico, he was careful and spent only $175 each week.

How much money did he have left?

How many weeks he he travel in Mexico if he had $125 left at the end of the trip? use algebra to solve and show work

Answer 1

First set up the equation that states how much money is in his account. We'll let w be the number of weeks that he was on his summer trip in Mexico. f(w) = 1700 - 175w. This is how much money is in his account w weeks after starting his trip.

Then if he was left with $125 in his account, we simply set the above equation equal to 125.

1700 - 175w = 125

175w = 1575

w = 1575/175 = 9

Thus, Humberto was on his summer trip for 9 weeks.

Answer 2

Let x = number of weeks that Humberto was on the trip

1700 - 175x = 125

Solve for x.