Question

Can someone help me with this question please.

Answer 1

Based on the given price for different pack, the cheapest price for 10 rolls of wallpaper is £85.70. using two packs of 5 rolls

How to find cheapest price of rolls

To determine the cheapest price for 10 rolls of wallpaper, compare the different options available.

Option 1: Single rolls

Price per single roll: £9.21

Total cost for 10 rolls: 10 * £9.21 = £92.10

Option 2: Pack of 3 rolls

Price per pack of 3 rolls: £25.38

To calculate the cost for 10 rolls, determine how many packs of 3 rolls are needed. Since each pack contains 3 rolls, we can get 3 rolls for £25.38.

Number of packs needed for 10 rolls: 10 / 3 ≈ 3.33 (rounding up to 4 packs)

Total cost for 10 rolls: 4 * £25.38 = £101.52

Option 3: Pack of 5 rolls

Price per pack of 5 rolls: £42.85

To calculate the cost for 10 rolls, determine how many packs of 5 rolls are needed.

Since each pack contains 5 rolls, we can get 5 rolls for £42.85.

Number of packs needed for 10 rolls: 10 / 5 = 2 packs

Total cost for 10 rolls: 2 * £42.85 = £85.70

Comparing the total costs for each option:

Option 1: £92.10

Option 2: £101.52

Option 3: £85.70

Therefore, Cheapest price is £85.70.

Answer 2

Cheapest price is £25.38

Explanation:

To determine the cheapest price that Sue can get the 10 rolls of wallpaper, calculate the cost of getting 10 rolls at each given price offer

=>Cost of getting 10 rolls at £9.21 per roll:

10 × £9.21 = £92.1

=>Cost of getting 10 rolls at £25.38 per pack of 3 rolls

£25.38 = 3 rolls

x = 10 rolls

x = (25.38*10)/3 = 253.8/3

10 rolls would cost x = £84.6

=>Cost of getting 10 rolls at £42.85 per pack of 5 rolls:

£42.85 = 5 rolls

x = 10 rolls

x = (10*42.85)/5 = 428.5/5

x = £85.7

From our calculation, getting 10 rolls at the price offer of £25.38 per pack of 3 rolls is the cheapest.

Therefore, the cheapest price is £25.38