Can you pls explain the Right hand side of equation.
Won't it be 12.10
The equation equates the total selling price. He gets $12.10 i.e. 1210 cents
If he sold x oranges for 35/3 cents and (100-x) for 85/7 cents, this is a total of
(35/3) * x + (85/7) * (100-x) cents
. You equate cents to cents.
Also, you can use the weighted average formula here:
w1/w2 = (85/7 - 121/10)/(121/10 - 35/3) = 9/91
Total 9+91 is 100. So he sells 9 oranges at 35 for 3 and 91 oranges at 85 for 7.
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