77+72=149
149/2=74.5
through the process of elimination, I found that Jim needs to get an 88 or higher to receive an average of 79 or greater.

77+72+88=237
237/3=79

7 0

3 years ago

Carlos predicts he has 24 dollars in his wallet. If Carlos actually had 33 dollars, what was Carlos' percent error?

Serggg [28]

Learned this yesterday, lol.
It's basically just:
100[ (33-24)/24 ]
100[ 9/24 ]
100[ 0.375 ]
37.5%

5 0

3 years ago

David earns 20% commission as a salesperson. He sold a hammock that cost $100. ​How much commission did David earn?

David earns 20% commission as a salesperson. He sold a hammock that cost $100. How much commission did David earn?