31/40
replace 77.5 with 775/10
simplify to get 155/2
divide by 100 to get 31/40
1/2 of 18 pints is 9 because 18/2=9
They have 9 pints left.
1/3 of 18 pints is 6 because 1/3*18=6
9-6=3
There are 3 pints left.
They need 7.75 pints and they only have 3 so 7.75-3=4.75 (or 4 3/4)
They need 4 3/4 more pints of blue paint
Answer:
8 houses
Step-by-step explanation:
Since there is 3 zippers for every 2 houses , you can put that into ratio form, for example :
3 : 2
Now that there is 12 ZIPPERS , we want to figure out how many houses , for example:
12: ?
First what you want to do is figure out how we ended out with the number , so we will take 3 zippers we started with and the 12 zippers we have now. We are going to divide the 3 from 12 leaving us with 4 as our quotient .
12÷3=4
Now that we have 4 groups of houses we can multiply 4 x 2 equaling us with , yes you guessed it 8 .
In ratio form the answer is this :
3 : 2 = 12 : 8
I hope you get a 100%!!!
