Ayoung sumo wrestler decided to go on a special diet to gain weight rapidly. he gained weight at a constar
rate.
the table compares the wrestler's weight (in kilograms) and the time since he started his diet (in months).
time (months) weight (kilograms)
0.5
80.6
88.4
2
3.5
96.2
how fast did the wrestler gain weight?
kilograms per month

Explanation:

The measure of how fast the wrestler gained weight, in kg per month, is the  weight gain rate.

The table is:

Time (months)           Weight (kg)

    0.5                             80.6

    2                                 88.4

    3.5                              96.2

The weight gain rate, WGR, for a period may be calculated as:

As you see, the wrestler gained weight at a constant rate of 5.2 kg per month.

x/3-10=8

x/3=18

x=48