6 (Allison's number of blue) divided by 16 (Allison's total) is equal to x (Sadie's blue) out of 24 (Sadie's total). So 6/16=3/8=x/24. So x=3*3, so Sadie's amount of blue pencils is 9. The rest of Sadie's pencils are yellow, so Sadie has 24-9=15 yellow pencils.
I think the answer to this question is 6:10?
Sadie has 9 blue pencils and 15 yellow pencils. This is determined by maintaining the same ratio of blue to total pencils as Allison. The ratio is calculated and solved using basic algebra principles.
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