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South African Mathematics Olympiad

Algebra Difficulty 3.9 AMC 10/12 Find the answer South Africa

If $t$ toffees cost $c$ cents, the number of toffees that can be bought for $r$ rands is

Pick one

Solution

Since $t$ toffees cost $c$ cents, each toffee costs $\frac{c}{t}$ cents.

$r$ rands equals $100r$ cents.

The number of toffees that can be bought for $100r$ cents is thus $100r \div \frac{c}{t} = \frac{100rt}{c}$

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