Question

If each pound of beef costs $2.51, how much does `4 1/3` pound cost? Round to the nearest cent.

Answer 1

`$10.92`

Explanation:

Using ratio in the format: `color(white)("d")"cost : weight"`

`"cost : weight" color(white)("d") ->color(white)("d") $2.51 : 1`

But we need the `1^(lb")` to be `4 1/3color(white)()^(lb)`

So multiply everything by `4 1/3` giving:

`"cost : weight" color(white)("d") ->color(white)("d") $2.51 : 1 ->($2.52xx4 1/3) : (1xx4 1/3)`

`color(white)("ddddddddddddddddddddd") ->color(white)("ddd")$10.92color(white)("dd.d") : color(white)("ddd")4 1/3`

The `$2.52xx4 1/3` give an exact value to 2 decimal places
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There are 100 cents in $1 so rounding to the nearest cent is the second decimal place. Thus the answer is the whole of the calculated value of `$10.92`