156k views
14 votes
Amlyah increased her bench press

from 110lbs to 1921bs. By what
percentage did she increase her
bench press weight?
Please show work and if you can’t then it’s okay thanks! :)

2 Answers

6 votes

Answer: 20% increase

======================================================

Step-by-step explanation:

A = old value = 110

B = new value = 132

C = percent change

C = 100*(B-A)/A

C = 100*(132-110)/110

C = 20%

The positive C value means we have a percent increase, which corresponds to the fact that A = 110 increases to B = 132.

The B-A = 132-110 = 22 portion up top indicates that the increase is 22 pounds, which when divided over 110, gets us 22/110 = 0.20 = 20%

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Checking the answer:

20% of 110 = 0.20*110 = 22

She's able to lift 22 extra pounds on top of the 110 pounds she can handle previously, so she can now lift 110+22 = 132 pounds. The answer is confirmed.

User Quaneesha
by
3.5k points
7 votes

Answer:

the anwser is 20% because when you start off with 110 and get 132 you have a addition of 22 take 110+22 you get 132 then divide by 100 then you get 20% when you convert

Step-by-step explanation:

User Cobbzilla
by
3.3k points