Question

Bags of sugar come in 3 sizes.

Small bag: A 175 g bag costs 55p.
Medium bag: A 525 g bag costs £1.76.
Large bag: A 1.15 kg bag costs £3.51.

Find the cost per gram for each bag of sugar.
Round your answers to 3dp.

Answer 1

The cost per gram for each bag is:

Small bag: 0.00314 £

Medium bag: 0.00335 £

Large bag: 0.00305 £

Explanation:

Small bag:

If 175 g cost 0.55 £, 1 g will be:

`(1g*0.55 \£)/(175\: g) = 0.00314 \£`

Medium bag:

If 525 g cost £ 1.76, 1g will be:

`(1g*1.76 \£)/(525\: g) = 0.00335 \£`

Large bag:

If 1150 g cost £ 3.51, 1g will be:

`(1g*3.51 \£)/(1150\: g) = 0.00305 \£`

I hope it helps you!