G8 Mclub

Jack and Jill are going swimming at a pool that is one mile from their house. They leave home simultaneously. Jill rides her bicycle to the pool at a constant speed of 10 miles per hour. Jack walks to the pool at a constant speed of 4 miles per hour. How many minutes before Jack does Jill arrive?

• 6

• 9

• 8

• 10

Ice goes east for 30km, then goes north for 18km, then goes west for 6km. How far is she now from the original position in km?

• 30km

• 40km

• 50km

• 20km

A train was running at the speed of 50 km/hr. A car was running at the speed of 80km/hr in the same direction. It took the car 45 seconds to cross the train completely. What is the length of the train in meter?

• 135m

• 125m

• 450m

• 375m

Given that the sum of the first n natural numbers is 210, find the value of n.

• 30

• 22

• 21

• 20

How many 3-digit numbers divisible by 5 are there?

• 179

• 181

• 180

• 175

Find the number of positive factors of 810.

• 18

• 12

• 24

• 20

What fraction of the square is grey?

They need 3 jars of paint to cover all faces of a cube as in figure 1. How many jars of paint do they need to cover all faces of the solid in figure 2?

• 40

• 20

• 27

• 10

On the picture ABCD is a rectangle, PQRS is a square. The shaded area is half of the area of rectangle ABCD. What is the length of PX?

• 1.5

• 3

• 2

• 1

Find the sum of interior angles in a regular 8-sided polygon.