Ateacher kept track of what students consumed at a school picnic. for three grades yhe ratio of the amount of water consumed to the amount of fruit juice consumed were equivalent.5th. water gallons 4 juice 96th water gallons 20 juice ? 7th water gal ? juice ?

Step-by-step explanation:

According to the problem, the ratio between water and juice is the same for all three grades, this means that each increase on each element is the same at every grade.

We know that 5th grade consumed 4 gallons of water and 9 gallons o juice. This ration is represented as

Then, 6th grade consumed 20 gallons of water, that is, 5 times more the water consumed by the 5th grade. So, if they are in the same ratio, then the consumption of juice by the 6th grade is also five times. So, the ratio for 6th grade would be

We apply the same logical process for 7th grade. Due to the same ratio, they also consumed five times more water and juice. So, the ratio of the 7th grade is

5th grade

6th grade

7th grade

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.