Question

For friends went out to dine together. Prior to the tip being added, the dinner bill was for $140. With the tip added-in, the dinner bill was equally shared by the four friends, each person's share being $42. How much was the tip as a percentage of the initial bill amount?

Answer 1

20%

Explanation:

20% of 140 is 28 and thats how much the difference

42+42+42+42= 168 168-140 = 28

140 times .20 = 28

Answer 2

16.67 %

Explanation:

140 / 4 = 35

42 - 35 = 7

7 x 4 = 28

140 + 28 = 168

140 / 168 = 5/6

1 - 5/6 = 1/6