Video games

Carla wants to play various video games. She has 20€ to play x games. Each video game costs 2€. Select the equation that corresponds with this situation

# Linear equations

Modeling
7

The water tank

In a house, the water deposit is at 2/7 its capacity. Three people have showers: The first one uses one fifth of the quantity in the tank; the second uses a third of what's in the tank and the third, three fourths of the firsts' quantity. Which is the capacity of the tank and how much water did the first two use is we know that the third used 10 litres to shower?
# Monomials & polynomials
# Units & rounding

Training
8

Guess the unknown number

Given a number, adding half of it, double it and triple it is 55. What number is it?

# Monomials & polynomials

Training
6

John's journey to school

John travels every day a 1 km long road at 6km/h to go to school. How long will it take John to get to his destination?
# Monomials & polynomials
# Units & rounding

Training
6

Equivalent equations 2

Select the equivalent equations −3 (2x − 1) = − 3 (x − 5)

# Linear equations

Training
7

Equivalent equations

Select the equation equivalent to 3(x – 6) – 8 = 7x – 8

# Linear equations

Training
7