7.95 ÷ 1.06 = $7.50
This works as by dividing 7.95 by the percentage multiplier 1.06 it will give you the original amount.
An alternative method is to find out what 100% (7.95) is, then divide by 10 to find 10% and then divide by 10 again to find 1% and then multiply the 1% by 6 and subtracting the answer from 7.95.
The answer should be 103? because when you add 103 to 42 u should get 103%.
Solve for k by simplifying both sides of the equation, then isolating the variable .
Answer - K=5
Hope this helps!
Have a great day! :)