180/12 = 15
so if he spent less than 180 at most 14 people, including himself went.
0.032x+0.041 (1500-x)=54.3
Solve for x
0.032x+61.5-0.041x=54.3
0.032x-0.041x=54.3-61.5
-0.009x=-7.2
X=7.2/0.009
X=800 invested at 3.2%
1500-800=700 invested at 4.1%
Answer:
15%
Step-by-step explanation:
To find the percent increase, use the equation:
percent of increase=<u>amount of increase</u>
original amount
The amount of increase is 92-80 = 12. The original amount of 80; this gives us
12/80 = 0.15 = 15%
