SOLUTION: 1) 42 is 40% of what number? 2) 15 is what percent of 3? 3) The sum of the page numbers on facing pages of a book is 157; what are the page numbers?

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Question 135154:

1) 42 is 40% of what number?
2) 15 is what percent of 3?
3) The sum of the page numbers on facing pages of a book is 157; what are the page numbers?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.42*40=16.8 answer
15/3=5 or 500% answer.
x+x+1=157
2x=157-1
2x=156
x=156/2
x=78 answer.