SOLUTION: a recipe for green salad for 70 people calls for 18 heads of lettuce. How many heads of lettuce would be needed for 176 people to be served?

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Question 71526: a recipe for green salad for 70 people calls for 18 heads of lettuce. How many heads of lettuce would be needed for 176 people to be served?
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!

If 70 people need 18 heads, then 1 person needs 18/70 of a head. So, if 1 person needs 18/70 of a head, then 176 people would need %28176%29%2818%2F70%29 heads of cabbage, or:
176%2818%2F70%29=45.257 heads of cabbage
ANOTHER APPROACH
70 is to 18 as 176 is to x and this is written as:
70%2F18=176%2Fx cross multiply
70x=%28176%29%2818%29 divide both sides by 70
x=45.257 heads of cabbage

Hope this helps----ptaylor