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How much does the ball cost?”

@Dodo

“A racket and a ball cost $1.10 in total. The racket costs $1.00 more than the ball. How much does the ball cost?”

racket cost = x ball cost = y x+y = 1.1 x=y+1 y+1+y = 1.1 2y+1 = 1.1 2y=0.1 y=0.05 ball cost = $0.05

@tarantula

price of racket (R) + price of ball (B) = 1.1$ R + B = 1.1 (equation 1) The racket (R) costs 1$ more than the ball. R = 1 + B (equation 2) We have 2 equations and 2 unknowns. So we can solve this. 1 + 2B = 1.1 => B = 0.1/2 = 0.05 Answer: Ball costs 0.05$

@parmu