Question

3 t-shirts and 2 hats costs £14 2 t-shirts and 7 hats costs £15 find the cost of a t-shirt find the cost of a hat

Answer 1

Answer:

let the cost of t-shirt be x and hat be y

3x+2y=14

3x=14-2y

x=(14-2y/3

2x+7y=15

2 (14-2y)/3+7y=15

(28-4y)/3+7y=15

(28-4y+21y)/3=15

28+17y=15×3

28+17y=45

17y=45-28

17y=17

y=17/17

y=1

x=(14-2y)/3

=14-2 (1)/3

=14-2/3

=12/3

=4

Therefore the cost of t-shirt = 4

And the cost of hat = 1