91.6k views
15 votes
PLEASE PLEASE HELP THANKS SO MUCH

PLEASE PLEASE HELP THANKS SO MUCH-example-1
User LongFlick
by
4.4k points

2 Answers

6 votes

Answer:

a=12

b=9

Explanation:

b=0.75a

a+b=21

a+0.75a=21

1.75a=21

a=12

a+b=21

12+b=21

b=9

User Bloodboiler
by
4.3k points
9 votes

Answer:

a= 12

b= 9

I hope this helps