Answer:
The trainers are 44.71% off the original price i think.
Step-by-step explanation:
35+2x=20+2.50x
subtract 2.50x
35+0.50x=20
subtract 35 frim both sides
0.50x=-15
x=-30
I'm confused to do you have an example
20% of 15 is 3. So 15-20% would be 15-3 which is 12.