Question

The French club is sponsoring a bake sale. If its goal is to raise at least $140, how many pastries must it sell at S3.50 each to meet that goal?

Answer 1

43

Explanation:

Using ratio but in fractional format

We need to determine the count of pastries so we put that as the top number.

Let the unknown count of pastries be `x`

`("count of pastries")/("cost") -> 1/($3.50)-=x/($140)`

Multiply both sides by $140

`(1xx$140)/($3.50)=x`

The units of measurement (dollars) cancel out giving

`140/3.30=x`

`x=42.4242bar(42)" "` the bar over the digits 42 means they `color(white)("dddddddddddddd")`repeat for ever.

It is not usual to sell part of a pastry so the count is 43