B. Alex puts 1/4 1of his money in savings and uses 1/( 2) of the remaining money to pay back her sister. If she has GH¢15 left, how much did she have at first?

GH¢60

Step-by-step explanation:

Alex puts 1/4 1of his money in savings and uses 1/( 2) of the remaining money to pay back her sister. If she has GH¢15 left, how much did she have at first?

Let the Total amount of Alex money = 1

We are told that she has GH¢15 left,

Hence, we find the fraction of the money she has left

1 - (1/4 + 1/2)

1 - 3/4

= 1/4

The fraction of the amount she left = 1/4

Let x represent the total amount of money that Alex had

1/4 × x = GH¢15

x / 4 = GH¢15

Cross Multiply

x = 4 × GH¢15

x = GH¢60

Therefore, Alex had GH¢60 at first

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!