A shop advertises 15% off its prices in a sale.
A purse is £4.42 in the sale.
How much was it before the price reduction?

100%-15%=85%

85%£4.42

100%x£

x=(100*4,42)/85

x=5,2£

before the reduction was  £5,2

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

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