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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?

 May 23, 2022
 #1
avatar+2448 
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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?

 May 23, 2022
 #2
avatar+231 
+2

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

 May 23, 2022

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