The ratio of doughnuts to muffins to cookies left over after the school play was 1:3:6. There were 42 cookies. How many desserts were there altogether?
+2668 The ratio of total desserts to cookies is \(10: 6 \).
We know that there are \(6 \times 7 = 42 \) cookies.
Now, we do the same thing to the desserts side.
Can you take it from here?
+237 let 6x be cookies,
doughnuts = x
muffins = 3x
6x = 42
x + 42/6 = 7
x = 7
3x = 3 * 7 = 21
6x = 42
Total dessert
= 7 + 21 + 42
= 70
