SOLUTION: USING A FORMULA OF 2/5 OUNCE OF SUM BLOCK AND 9/10 OUNCE OF MOISTURING CREAM, A BEAUTICIAN MIXES HER OWN BRAND OF SKIN CREAM. SHE PACKAGES IT IN 1/10 OUNCE TUBES. HOW MANY TUBES CA

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: USING A FORMULA OF 2/5 OUNCE OF SUM BLOCK AND 9/10 OUNCE OF MOISTURING CREAM, A BEAUTICIAN MIXES HER OWN BRAND OF SKIN CREAM. SHE PACKAGES IT IN 1/10 OUNCE TUBES. HOW MANY TUBES CA      Log On


   

Question 73259: USING A FORMULA OF 2/5 OUNCE OF SUM BLOCK AND 9/10 OUNCE OF MOISTURING CREAM, A BEAUTICIAN MIXES HER OWN BRAND OF SKIN CREAM. SHE PACKAGES IT IN 1/10 OUNCE TUBES. HOW MANY TUBES CAN BE PRODUCED USING THIS FORMULA?
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!

First, we know that after she mixes them together, she has:
2%2F5%2B9%2F10=4%2F10%2B9%2F10=13%2F10 oz of her own brand of skin cream
So, the question is: How many 1/10 oz tubes can be produced from 13/10 ounces of her brand. In other words, how many (1/10)'s are there in 13/10:
We can find this out by dividing 13/10 by 1/10:
%2813%2F10%29%2F%281%2F10%29 multiply numerator and denominator by 10
%28%2813%2F10%29%2A10%29%2F%28%281%2F10%29%2A10%29 simplifying, we get:
13%2F1 or 13------------------------answer
Hope this helps----ptaylor