Question

At a restaurant the cost for a breakfast taco and a small glass of milk is $2.10. The cost for 2 tacos and 3 small glasses of milk is $5.15. Which pair of equations can be used to determine t, the cost of a taco, and m, the cost of a small glass of milk

Answer 1

Answer:

m=$0.95

t=$1.15

Explanation:

Let m=cost of milk

t=cost of taco

t+m=$2.10 (1)

2t+3m=$5.15 (2)

From (1)

t=$2.10-m

Sub into (2)

2($2.10-m)+3m=$5.15

$4.2-2m+3m=$5.15

$4.2+m=5.15

m=$5.15-$4.2

m=$0.95

Sub value of m into (1)

t+m=$2.10

t+$0.95=$2.10

t=$2.10-0.95

t=$1.15