alyssaxsanchez
27.04.2021 •
Mathematics
QUESTION 3 Alice and Mark are each swimming across the pool shown. Line AB represents the path Mark swims. Line CD represents the path Alice swims. How much farther did Mark swim than Alice?
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Ответ:
1. First we need to find cost price (cp) of 1 item
2. Secondly, we need to find selling price(sp) of 1 item
3.loss= cp - sp
4. loss% = loss/cp *100
Completly solved :
Cp of 12 items is ...₹ 86
Cp of one item is 86/12 = ₹ 7.17
Sp of 15 items is ₹ 43
Sp of 1 items is ₹ 43/15= ₹ 2.87
Loss = 7.17 - 2.87 = ₹4.3
Loss% =4.3/7.17 *100 = 59.97%