If sweatshirts cost $28 and tee shirts cost $15 and William spent $1440 buying a total of 70 sweatshirts and tee shirts for the school store, how many tee shirts did he purchase?

Question

calculusxy · Answer

@jim_thompson5910

jim_thompson5910 · Answer

do you have the 2 equations set up?

calculusxy · Answer

So this is what I have:
$$70($28) + 15s = $1440$$

jim_thompson5910 · Answer

70 is the number of t-shirts and sweatshirts combined

jim_thompson5910 · Answer

x = # of sweatshirts
y = # of t shirts

x+y = 70

jim_thompson5910 · Answer

`sweatshirts cost $28 and tee shirts cost $15 and William spent $1440`

28x + 15y = 1440

is the other equation

calculusxy · Answer

Oh okay