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.

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!