Problema Solution
Dave is making a run to the local coffee shop for his work cubicle. He is going to buy a combination of Ice coffees and Cappuccinos. The Ice coffees cost $4 each and the Cappuccinos cost $3 each. If he needs 30 drinks total and has $100 to spend, how many of each should he buy?
Answer provided by our tutors
Cost of ice coffees = $4
Cost of Cappuccinos = $3
Total number of drinks = 30
Let coffees = x
Let Cappuccinos = y
=> x+y = 30
and
4x+3y=100
Multiplying first equation by 3 and subtracting from second equation gives us
=> x = 10
and y = 20