Answer:
A. 13 units is the answer
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Let share of A is 3x and B is 2x
According to question
3x + 2x = 85
x = 85/5
x = 17
Therefore A pays 51 euros
20, 20, 20, 30, 20
Tip for rounding nearest 10th: if the 2nd number is above 5 it’s the one above, if it’s below 5 it’s the one below.