If the discount is 10% then how it costs 0.9x?

If you take 10% off the price, you'll be left with 90% to pay.

3x/10 is correct. Then rearrange the formula I gave:

This answer will be in hours so you'll need to convert to minutes.

Bob

]]>If the price is x then a discount of 10% means it will now cost 0.9x and then multiply by a further 0.85 to apply the second discount.

Bob

If the discount is 10% then how it costs 0.9x?

]]>then answer is 15x

]]>Then Ali works at x/5 work units per hour and Hashim at x/10. Add these to get their combined work rate and use the formula:

Bob

Adding this lead to (3*x)/10

]]>Let the amount of work to be done be x.

Then Ali works at x/5 work units per hour and Hashim at x/10. Add these to get their combined work rate and use the formula:

If the price is x then a discount of 10% means it will now cost 0.9x and then multiply by a further 0.85 to apply the second discount.

If this is kx then the discount is (x-kx)/x times 100%

Bob

]]>Options

A:24%

B:24.5%

C:23.5%

D:22%

E:25%