Respuesta :
Answer:
Tom hit 13 red targets!
Step-by-step explanation:
Answer:
let hitting the red target bey x and blue target be y
then
5x+10y = 135
again
x+y=20
y=20-x
substituting the of y in above equation
5x + 10(20-x) = 135
5x+200-10x = 135
5x= 65
x= 13 answer
Step-by-step explanation: