Question

150g of roquefort cheese cost £1.68
work out the cost of 250g of roquefort

Answer 1

ANSWER

250g of Roquefort cheese will cost

£2.8

Step-by-step explanation

If 150g of roquefort cheese cost £1.68, we can write the ratio,



`150: 1.68`

Let 250g of Roquefort cheese cost £x.


Then we can again write the ratio,


`250:x`

We can equate the two ratios and solve for x.


`150: 1.68 = 250:x`


We rewrite the ratios as fractions to obtain,


`(150)/(1.68) = (250)/(x)`

We cross multiply to get,



`150x = 250 * 1.68`
This implies that,


`150x = 420`


Divide both sides by 150 to get,



`x = (420)/(150)`

`x = 2.8`


Therefore 250g of Roquefort cheese will cost

£2.8