Bonus points for solving this mentally.
Algebra
Level
1
A bat and a ball together cost $1.10 if the bat is a dollar more than the ball, what is the price of the ball?
10 Cents
15 Cents
1 Cent
5 Cents
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1 solution
Hello all,
let a = bat, b = ball,
a + b = 1.10 (2nd)
a = b + 1 (1st)
By substituting 1st into 2nd ,
b + 1 + b = 1.10 b = 0.1 / 2 = 0.05 which is equivalent to 5 cents...