Click on screenA shop buys and sells products

Buy at Dh 4

Sell at Dh 9

Profit Dh 5

A bank is a money shop

Buy at Dh 4.24135

Sell at Dh 4.34971

Profit Dh 0.10836

The bank buys and sellsFOREIGN CURRENCY

By buying and selling one Euro,

the bank makes a profit of 11 fils

Use headphones or loudspeakers

The customer sells Euros

The bank buys Euros

buy sell

Euro 4.24135 4.34971

Use the buy rate

1 = Dh

Set up a proportio

n

1 EURO : Dh 4.24135 = …… EURO : Dh …….50 x

Solve the proportio

n

x = 50 x 4.24135

x = 212.0675

For 50 Euros the customer gets Dh 212.07

The customer buys Euros

The bank sells Euros

buy sell

Euro 4.24135 4.349711

1 EURO : Dh 4.34971 = …… EURO : Dh ……. x

x = 100 / 4.34971

x = 22.99003842

100For 100 dirhams the customer gets Euro 22.99

= Dh

Do not think in Dirhams

Think in Euros

The customer exchanges 100 Dirhams

Use the sell rate Set up a

proportion

Solve the proportio

n