A college writing seminar increased its size by 50\PP, percent from the first to the second day. If the total number of students

Question

4 years ago

9

in the seminar on the second day was 151515, how many students were in the class on the first day

1 answer:

Jobisdone [24] · Answer 1 · 2021-10-30T21:19:39+03:00

Answer: There were 10 students in the class on the first day.

Step-by-step explanation:

Let x be the number of students of the first day.

Given: A college writing seminar increased its size by 50 percent from the first to the second day.

i.e. Number of students on second day = (Number of students on first day)+(50% of Number of students on first day)

= x +50% of x

= x+0.50x

= (1.50)x

=1.50x

Since, it is given that the total number of students in the seminar on the second day was 15.

i.e. $1.50x=15$

$\Rightarrow\ x=\dfrac{15}{1.5}\Rightarrow\ x=\dfrac{150}{15}\\\\\Rightarrow\ x=10$

Hence, there were 10 students in the class on the first day.