Antonia1 Antonia1
  • 22-04-2015
  • Mathematics
contestada

1kg costs £1.28. what is the cost of 250g

Respuesta :

iGreen
iGreen iGreen
  • 23-04-2015
First, convert 1 kg to g.

1 kg = 1000 g

So 1000 g = 1.28

Set up a proportion:

1000/1.28 = 250/x

Cross multiply:

1000x = 320

Divide 1000 to both sides:

x = 0.32

So 250g costs £0.32
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