Mechanic Math #7

• 3

• 5

• 15

Tags

CCSS.7.EE.B.4A

A car's fuel efficiency is 25 miles per gallon. How many kilometers per liter is this, given that 1 mile = 1.60934 kilometers and 1 gallon = 3.78541 liters?

• 10.6 km/L

• 8.5 km/L

• 6.7 km/L

Tags

CCSS.6.RP.A.3D

A mechanic mixes oil and gasoline in a ratio of 1:50. If he has 2 liters of oil, how much gasoline does he need?

• 50 liters

• 100 liters

• 150 liters

A car's value depreciates by 20% each year. If the car is currently worth $10,000, what will be its value after one year?

• $8,000

• $7,500

• $9,000

Tags

CCSS.HSF.BF.A.2

A mechanic is analyzing a graph that shows the speed of a car over time. If the graph shows a constant speed of 60 mph for 2 hours, how far did the car travel?

• 60 miles

• 120 miles

• 180 miles

Tags

CCSS.HSF.IF.B.4

• 2

• 4

• 5

Tags

CCSS.7.EE.B.4A

Convert 1500 RPM (revolutions per minute) to RPS (revolutions per second). (hint - divide)

• 25 RPS

• 30 RPS

• 40 RPS

Tags

CCSS.6.RP.A.3D

A mechanic needs to mix coolant and water in a 3:2 ratio. If he has 6 liters of coolant, how much water does he need?

• 2 liters

• 4 liters

• 5 liters

A mechanic notices that a car's tire pressure decreases by 15% over a month. If the initial pressure was 40 psi, what is the pressure at the end of the month?

• 34 psi

• 36 psi

• 38 psi

Tags

CCSS.HSF-LE.A.1C

A graph shows the temperature of an engine over time. If the temperature rises steadily from 70°F to 150°F over 4 hours, what is the average rate of temperature increase per hour? (difference in temperature divided by hours)

• 15°F/hour

• 20°F/hour

• 25°F/hour

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6