No because if you convert them into a percentage, you get 11/15 as 73.3% and 1/2 is 50%. Hope this helps
Let n be the 40%, and 100-n be the 10%. Then:
.4n+.1(100-n)=.22(100)
.3n+10=22
.3n=12
n=40
The candy distributor needs 40kg of 40%, and 60kg of 10%
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If we make his age equal to x, the. We can set up the equation X=4(x-15)