Question

Adriana is constructing a building.

She has a budget of £3400.
She spends 35% of her budget on bricks and 12% on cement.
She also spends £1483 on timber.
The rest of her budget is spent on roof tiles.
What percentage of the budget is spent on roof tiles?

Answer 1

Answer: Around 7 percent

Step-by-step explanation: Okay, to find this, we need to find 35% and 12% of 3400. So, when we get it, we should add that up, then subtract the sum of those 2 numbers from 3400 to get part 1 of this problem. So, I got:

-35% of 3400 = 1190

-12% of 3400 = 408

When added, I got 1670. But, we must not forget about the other £1483 she spent on timber, so we need to add 1483 to 1670. After adding, you should get 3153. So now to find the initial cost of the roof tiles, we need to subtract 3153 from 3400, to get 247. So, 247 is what percent of 2400 is about 7%. The actual percentage is 7.26470588%. I just rounded it to the nearest whole #. So, to make sure we are right, I checked on the calculator that 7% of 3400 is 238. This is the highest we can go without going over 247. So, 8% of 3400 is 272, which surpasses 247. So, that is how I got 7%. I hope this helps!