If a bat and ball costs $1:10

2 answers:

3 0

X = bat, y = ball

x + y = 1.10
x = y + 1

y + 1 + y = 1.10
2y + 1 = 1.10
2y = 1.10 - 1
2y = 0.10
y = 0.10/2
y = 0.05 <=== the ball

x = y + 1
x = 0.05 + 1
x = 1.05 <== the bat

frutty [35]3 years ago

3 0

10¢ I think because 1.10$-1.00$=10¢

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