In her first week of training, she runs 10 km. in her second week, she runs 15 km. the third week, she runs 25 km. she runs 50 km in her fourth week before the race. how many kilometers in total does she run in training?

100 kilometers

Step-by-step explanation:

In her first week of training, she runs = 10 km

In her second week she runs = 15 km.

In her third week she runs = 25 km

In fourth week she runs = 50 km.

Total distance she run in her training = 10 + 15 + 25 + 50

                                                              = 100 km.

She runs 100 kilometers in total in her training before race.

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get