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Writing and Solving Equations from Word Problems

4. If it takes 4 hours to cover x miles and 5 hours to cover y miles, what is the average speed?

a) 9
b) x/4 + y/5
c) (x+y)/9
d) 4/x + 5/y

5. If you can make 100 cups of coffee and 125 cups of tea from a gallon milk, how many gallons of milk would you need to make 20 cups of coffee and 25 cups of tea?

a) 0.1
b) 0.2
c) 0.3
d) 0.4

Solution Preview

4. Answer: C
Because from the condition, 4+5=9 hours can cover x+y ...

Solution Summary

Word problems are solved. The response received a rating of "5/5" from the student who originally posted the question.

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