Question

A recipe requires 6.5 teaspoons of sugar to make a pie. Which equation shows the number of teaspoons of sugar, y, needed to make x pies?

Answer 1

The equation is:

y = 6.5x

Step-by-step explanation:

We are given that one pie requires 6.5 teaspoons of sugar, i.e., the unit rate is 6.5 teaspoons/pie

This means that:

Number of teaspoons required to make x pies = number of pies (x) * unit rate

Number of teaspoons required to make x pies = number of pies (x) * 6.5

Given that the number of spoons required to make x pies is y

Then the equation becomes:

y = 6.5x

Another solution:

We can use cross multiplication as follows:

1 pie ..........................> 6.5 teaspoons

x pies ........................> y teaspoons

y = 6.5x

Hope this helps :)