Last monday matthew was given his pocket money, which is meant to last him a whole week.
on monday he spent a quarter of his money.
on tuesday he spent a third of the remaining money.
on wednesday he spent half of the remaining money.
on thursday he spent his last £1.25.
how much money did matthew have?

The price of a box of 15 cloud markers is $12.70. the price of a box of 42 cloud markers is $31.60. all prices are without tax, and the price of the packaging is the same for any size. how much would 50 cloud markers in a box cost? write an equation which will tell the price p for the number n markers in the box.