A hairdresser combined three bottles of shampoo into one bottle. The first bottle had 4.8 ounces of shampoo, the second bottle h
ad 5.4 ounces, and the third bottle had 6.6 ounces. The hairdresser used 2/5 of the shampoo from the new bottle when she washed her hair. How many ounces of shampoo did she use? Describe two different ways to solve the problem.
Okay, we need two equations for this: a will represent adults, and k, kids a + k = 168 a = 168 - k 300a + 150k = 43200 Replace a: 300(168-k) + 150k = 43200 50400 - 300k + 150k = 43200 -150k = -7200 15k = 720 k = 48 168 - 48 = 120 46 children and 120 adults attended
