One way to carry out this problem is to simply take the value that you already know, which is that 1/5 is 20 % and multiply it by 2 for 2/5 or 2 (1/5ths) and do this for all of them. There is a pattern that occurs for every increase in one out of denominator of 5.
Using BEDMAS, it would be brackets first, so anything Inside a set of brackets would be solved first, and would follow the same rule. Once the brackets have been solved, next would be the exponents. Since your brackets have been solved you can expand with the exponents. After exponents, would be anything that has to be divided or multiplied. These two operations are interchangeable based on what is more convenient or beneficial to do first. And lastly, addition and subtraction, which once again are interchangeable operations
a is the answer as the only change is the gradient being halved,
b would be if it was -1/2 and c would be1/2 x+1/2
Answer: 35 and 27
Step-by-step explanation:
We can solve this by using a system of equations
x will be the first number while y will be the second

This equation means the two numbers will add to get 62

This equation means when subtracted the two numbers will have the difference of 8.
Now I will solve by elimination

When adding the two equations why was eliminated so now we can find the value of x

Now sub in x into one of the original equations to find the value of y
