Answer:
8 walls
Step-by-step explanation:
While painting the interior of a large house, Gene is going to transfer some paint in a large 5 gallon container to a smaller bucket. Unfortunately he slips and spills 2 gallons of paint all over the floor.
The remaining amount of paint is
= 5 gallons - 2 gallons
= 3 gallons
If each wall in the house takes 9/24 of a gallon to paint, how many walls can he paint with what he has left?
Hence:
9/24 gallon = 1 Wall
3 gallons = x wall
Cross Multiply
9/24 × x = 3 × 1
x= 3 ÷ 9/24
x = 3 × 24/9
x = 8 walls
He can paint 8 walls with what is left.
Speed of motorcycle = x
speed of car = X +10
travel time = distance / speed
car travel time = 237 /(x+10)
motorcycle travel time = 207/x
set them to equal each other:
237/x+10 = 207/x
cross multiply:
237x = 207(x+10)
distribute the right side:
237x = 207x + 2070
subtract 207x from both sides:
30x = 2070
divide both sides by 30:
x = 2070 / 30
x = 69
speed of motorcycle was 69 miles per hour
speed of car was 69 +10 = 79 miles per hour
1. n+5
2. n-5
3. x+8
4. x-8
5. 8-x
6. 5-n
7. x+(5+7)
8. x-(8+2)
9. x+(8-2)
10. x+x
good luck
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