David paid a total of $60 for 4 t-shirt and 3 pair of shorts.Each pair of short cost twice as much as a t-shirt.Find total cost of a pair of short and a t-shirt
4t+3s = 60
s = 2t
4t+6t=60
t=6
s=12
t+s=18
s = 2t
4t+6t=60
t=6
s=12
t+s=18