Question

On a Saturday, La petite bakery sold cupcakes, bagels, and rolls in the ratio of 12:5:7. The number of cupcakes sold was 50 more than the number of rolls sold.

A) how many cupcakes did La Petite Bakery sell on saturday?
B) how many cupcakes bagels, and rolls in ALL did La petite Bakery sell on that saturday?

Answer 1

12:5:7
the difference between 12 and 7 is 5 and 5x10=50 so...
we times the whole ratio by 10
120:50:70
now the difference between cupcakes and rolls is 50.
so...
a)120

to work out the total of how many items the bakery sold we add all of them together
120+50+70= 240
so...
b) 240

Answer 2

Cupcakes:Bagels:Rolls
12:5:7
If there were 50 more cupcakes sold than rolls, that means the difference between the ratios is 50. 12 - 7 = 5.
50/5 = 10 meaning that 1 part of the ratio is 10.
It's simple now just to times the ratio number by 10 for your answers.
A) 12 x 10 = 120
B) (12 x 10) + (5 x 10) + (7 x 10) = 240