Question

A baker at rods bakery misread the directions and used 53/4 cups of flour in a recipe. It was 13/4 times to much flour. How much flour should the baker have used

Answer 1

If the baker used $\frac{53}{4}$ and it was $\frac{13}{4}$ too much, then we must perform the following math calculation:

$\frac{53}{4} / \frac{13}{4}$

This will find the actual amount that the baker needed to use. To do this calculation we can use the Keep Change Switch rule.

Keep $\frac{53}{4}$, change the division to multiplication, and then switch the numerator with the denominator on the second fraction to get $\frac{4}{13}.$ This gives us:

$\frac{53}{4} * \frac{4}{13}$

Now multiply the numerators and put that over the product of the denominators.

$\frac{53*4}{4*13} = \frac{212}{52} = \frac{53}{13}$

Make sure you reduce your fractions, always good to do that!

The baker should have used $\frac{53}{13}$ cups of flour.