Question

Jill went out to dinner and left a 15% tip. The cost of the bill is represented by b . The total amount Jill paid is represented as b+0.15b= b, which means that an increase of 15% is the same as

Answer 1

Jill went for dinner

Let the total cost of the dinner = b

He gave 15% tip, then 15%(b) =0.15b

Total cost of the bill = b+0.15b = 1.15b = b

Percentage increase =
`(increased bill-original amount of bill)/(original amount of bill)`

= 15%

The cost of the dinner is increased by 15% as he gave the bill.

Therefore, increase of 15% is the same as the percentage of bill.