The water in the tank 70 days from today will be 42 gallons.
Step-by-step explanation:
Current water in the tank is 44 gallons
As per my understanding, water evaporates at -2.5 gallons a week
Owner adds 3 gallons of water every 10 days
To find water in the tank after 70 days,
1. Find the number of weeks in 70 days
a) 1 month = 30 days
x months = 70 days
Cross multiply
30x = 70
x = [tex]\frac{70}{30}[/tex]
x = 2.3 months
b) 1 month = 4 weeks
2.3 months = y weeks
y = 2.3 x 4
y = 9.2 weeks
c) Each week, 2.5 gallon evaporates
1 week = 2.5 gallon
9.2 weeks = z gallons
z = 9.2 x 2.5
z = 23 gallons
2. After every 10 days, 3 gallons are added.
In 70 days, 3 gallons are added 7 times so,
3 x 7 = 21 gallons
3. Water in the tank 70 days from today = Water in tank + water added - water evaporated
Water in the tank 70 days from today = 44 + 21 - 23 = 42 gallons
Therefore, the water in the tank 70 days from today will be 42 gallons.
Keywords: Equations, gallons
Learn more about equations at
#LearnwithBrainly
