5) A baker sold muffins, doughnuts and cupcakes in the ratio 13:5:4. The number of muffins sold was 80 more than the number of doughnuts sold. How many cupcakes did the baker sell?

Number of full size cars = 900

Step-by-step explanation:

The ratio of medium size cars to compacts is 7 to 5 and the ratio of compacts to full-size cars is 8 to 9. Since compact cars are  there in both ratios , we need to  make the number in the ratio for compact cars to be the same.

Multiply by 8 on numerator and denominator

Multiply numerator and denominator by 5.

Ratio of medium, compact and full size are in ratio 56,40,45.

Total number of cars =2820.

(56 + 40 + 45)x = 2820

x =

x = 20

Number of full size cars = =900