Caramel sharing calculation

Annie and Jane shared 21 caramels, while Jane had 40% of what Annie received. How many caramels did she get?

Final Answer:

a =  15
j =  6

Step-by-step explanation:


a+j=21
j = 0.40·a

a+j = 21
0.4a-j = 0

Row 2 - 0.4 · Row 1 → Row 2
a+j = 21
-1.4j = -8.4


j = -8.4/-1.4 = 6
a = 21-j = 21-6 = 15

a = 15
j = 6

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