makenzietayler8017 makenzietayler8017
  • 14-11-2019
  • Mathematics
contestada

Margie ordered sets of skin care products for $6.00 each and paid a flat shipping fee of $7.00. Her total cost was $115.00. How many items did she order

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Nonicorp1
Nonicorp1 Nonicorp1
  • 14-11-2019

Answer:

Margie ordered a total of 18 items

Step-by-step explanation:

Margie's total cost can be expressed as;

C=(p×n)+s

where;

C=total cost

p=price per unit of skin care set

n=number of skin care sets

s=shipping fee

In our case;

C=$115.00

p=$6.00 each

n=unknown

s=$7.00

replacing;

115=(6×n)+7

6 n+7=115

6 n=115-7

6 n=108

6 n=108

n=108/6

n=18

Margie ordered a total of 18 items

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