In a sale, there is 50% off all prices. A chair costs £45 in the sale. How much was it before the sale?​

90

Step-by-step explanation:

add it two times since it has been reduced by 50%

man I ain't good at maths so sorry if wrong answer

the third picture

step-by-step explanation:

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!