You’re nearly there now – just one more step in the next section to finally work out the DIY cost.
Activity _unit3.7.3 Activity 10 The price of doing it yourself
Now work out the DIY cost using all the information you’ve gathered and worked out.
- Each roll costs £15.
- There is a ‘three-for-two’ special offer.
- I will also need to buy some safety equipment costing £40.
- I need to buy 20 rolls of insulation.
Since I need to buy 20 rolls of insulation, I will be able to take advantage of the ‘three-for-two’ offer. So for every three rolls I purchase, I only pay for two rolls.
So cost of three rolls = £15 × 2 = £30
To determine how many times I will get to take advantage of the offer, a picture can be used.
Since there are six sets of three rolls, it will cost £30 × 6 = £180. Unfortunately, the two additional rolls won’t be on offer, so the insulation will cost £180 + £15 + £15 = £210.
Finally, the safety equipment is £40. This puts the total cost at £210 + £40 = £250
You can now move onto the final step in the problem solving cycle – interpreting the answer