Question

there are students in a school. This number is 15% more than it was last year. Calculate the number of students last year

Answer 1

Answer: See explanation

Step-by-step explanation:

Your question isn't complete but let's help out by giving some values to the question.

Let's say there are 230 students in a school. This number is 15% more than it was last year. Calculate the number of students last year.

Let the number of students last year be x.

Since there's a 15% increase, this implies that (100% + 15%) = 115% of x equals to 230. This will be:

115% of x = 230

115% × x = 230

115/100 × x = 230

1.15x = 230

x = 230/1.15

x = 200

There were 200 students last year.

Just assign the missing values and use the above method and you'll get your answer.