Proportions. Direct and Inverse Proportionality

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Tags

CCSS.7.RP.A.2B

Solve for x 

• x = 1/10
• x = 10
• x = 4
• x = 5

Tags

CCSS.7.RP.A.2C

María hosts 15 guests for lunch and she wants to cook following a recipe that suggest 350 g of meat for 6 people. Find out the quantity of meat she needs to cook for everyone

• 850 g

• 875 g

• 900 g

• 825 g

18 workers carry out a job in 30 days. How many days will it take the same job if there are only 9 workers?

• 60 days

• 30 days

• 15 days

• 90 days

An organisation that works in Africa distributes five kilos of rice for two families. If they have distributed today 45 kilos of rice, how many families did receive food today?

• 15 families

• 20 families

• 18 families

• 16 families

For the school dinner, today, there were 54 people and they eat 18 baguettes. For 72 people, how many baguettes will they need?

• 22 baguettes

• 23 baguettes

• 24 baguettes

• 25 baguettes

I take 40 minutes to go up a hill at 6 km/h. When I go down I ride at 24 km/h, how long will it take to go back to the starting point?

• 80 minutes

• 20 minutes

• 10 minutes

• 5 minutes