Step-by-Step Solution
Solution 1
Steps
1. For making 144 Cookies cups of sugar needed is 4, that is 
2. Now to do 90 Cookies no of cups of sugar needed is 
, then 
3. Now by comparing Equations 1 and 2, then
• 
4. As we know change the proportion into a fraction, then
• 
5. Now by doing cross multiplication, we have
• 
• 
6. The answer is 
Hence the cups of sugar needed to do 90 Cookies is
.
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