55. On a market day, Auntie Mansah bought 100 oranges at 4 for 20Gp. On reaching home, she gave x oranges to her husband and then sold the remaining at 5 for 40Gp. If she made a profit of GH¢2.60, find the value of x.​

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation:

0.038

step-by-step explanation:

b.

step-by-step explanation: