Darren went shopping. He bought a shirt and a tie for a total price of £29.75. This price includes a 15% loyalty discount. Before the discount, the tie was priced at £13. Work out the price of the shirt before the discount.

£21.21

Step-by-step explanation:

First, find the total price of the two items before the discount was applied. To do this, multiply the discounted price by 1.15, which is the decimal form of 115%. I added 15% to 100% in order to reverse to discount.

29.75 * 1.15 = 34.21

Now that we know the total price before the discount, we can subtract the value of the tie from the total price to find the price of the shirt:

34.21 - 13 = 21.21

The shirt cost £21.21 before the discount.

Hope this helps :)

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i