Question

Dustin is mixing concrete. A formula for concrete calls for 3/8 gal of water. Dustin wants to make 7/9 more concrete than the formula creates. How much water should Dustin use?

Express your answer as a fraction in simplest form.

Answer 1

So I multiply 3/8 by 7/9, then?

Answer 2

doing that would get you a smaller number. you want a bigger number. so add 1 to that. 16/9 is 7/9 more

Answer 3

so multiply 3/8 and 16/9

Answer 4

2/3

Answer 5

yup

Answer 6

Yay! Submitting.

Answer 7

Thank you so much, omg. I got a 100% and I think just figured out how to do fractions quicker, lol

Answer 8

woohoo!

Answer 9

when it says "more" or "raise" or "increase" or anything like that, the fraction you're going to multiply is going to be greater than 1. like if it said i got paid $14 an hr, and i'm getting a 25% raise, then i would multiply 14 and 1.25

and it's the opposite to "less than" or "decrease" like if i got paid $14 an hr and i was getting a wage cut of 5%, then i'd multiply 14 and 0.95