Peter works in a shop an was told to increase the prices by 15%. he increased one price to £172.50. what was the original price.

$150

Step-by-step explanation:

Increased by 15% is the same as multiplying by 115% (or 1.15)

If 172.50 is 115%, then we must multiply by 100/115.

172.50 x (100/115) = 150

$150 was the original price.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

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step-by-step explanation: