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?

1 Answer
Mar 7, 2018

Answer:

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