Question

Wakaba buys some granola bars at $0.50 each and energy drinks $2 each for a group hike. She buys twice as many granola bars as she does drinks. If she spends $27 in total how many granola bars and drinks does she buy? Let x= the number of drinks

Answer 1

Let $x$ = the number of drinks

since she buys twice as many granola bars as energy drinks.

Granola = $2x$

If she spends $27 in total and price of granola bars and energy drink are $0.50 an $2 respectively.

Hence

$0.50(2x)+2(x)=27$ dollars

$x+2x=27$ dollars

$3x=27$

$x=9$

Hence number of drinks is $9$

Granola = $2(9)=18$

She bought 9 energy drinks and 18 granola