Worded equations

A man is six times as old as his son. Twenty years later he will be twice as old as his son. Find the age of the man when his son was born.

• 25

• 5

• 30

• 35

Tags

CCSS.8.EE.C.8C

Sasha is 4 years older than her brother. Their total age is 20. Which equation shows this relationship?

• 
  

  $x+4=20$

• $4x\ =\ 20$

• $2x+4\ =20$

• $20-x=4$

Every morning, Sara walks 2km to the school and it takes 30 minutes. What is her speed in km/h?

• 4km/h

• 0,067km/h

• 15km/h

• 1,11 km/h

What is the formula to calculate speed?

• Speed = time/distance
• Speed = distance/time
• Speed = distance x time
• Speed = time x distance

It took 3.5 hours for a train to travel the distance between two cities at a velocity of 120 miles/h. How many miles lie between the two cities?

• 34 miles

• 420 miles

• 120 miles

• 360 miles

How long would it take for a car to travel a distance of 200 kilometers if it is traveling at a velocity of 55 km/h?

• 20 min

• 11,000 min

• 3.6 h

• 5 h

A ball rolls down a steep hill. It travels 500 m in 1 minute. It then rolls on a flat surface for an additional 3 minutes and travels 300 m. What is the average speed of the ball?

• .5 m/min
• 100 m/min
• 200 m/sec
• 200 m/min

Find the amounts of 20% salt solution and 8% salt solution that should be mixed together to make 500 ml of 15% salt solution.

• 291.67 ml of 20% salt solution,
  208.33 ml of 8% salt solution

• 280 ml of 20% salt solution,
  220 ml of 8% salt solution

• 208.33 ml of 20% salt solution,
  291.67 ml of 8% salt solution

• 220 ml of 20% salt solution,
  280 ml of 8% salt solution

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.CED.A.3

CCSS.HSA.REI.C.6