(25000-f)(.03)+.05f=1100
750-.03f+.05f=1100
750+.02f=1100
.02f=350
f=$17500
So Mary invested $17500 @ 5% and 7500 at 3% to earn $1100 in interest.
Small box volume is
12*2*7 3/4=186cubic inches
big box height =12/80%=15
big box volume=15*2*7 3/4=232.5cubic inches
difference=232.5-186=46.5 cubic inches
Answer:
1 and 103/105
Step-by-step explanation: