Level 3
A square of side 6 cm has the same perimeter as a rectangle. Find the area of the rectangle if the length of the rectangle is twice the breadth of the rectangle.
Level 3
Tank A holds 3 ℓ 485 mℓ of water. Tank B holds twice as much water as Tank A. Find the total amount of water in the 2 tanks. (Give the answer in litres and millilitres.)
Level 3
Adam has 200 red stickers, blue stickers and green stickers.
40% of the stickers are blue.
30% of the remaining stickers are red.
The rest are green stickers.