My teacher has failed to teach us this. >.<

Okay, I have a few problems given to me by my teacher due Monday. Most of it was review of what we've already done, but the last 3 questions I don't remember ever learning. We did something similar, but no identical questions to this.

For this one, I asked my friend for help but he told me it must have been a typo or something, cause it can't be done. I'll just post it anyway.

**1) How many days will it take for $1 000 000 to earn $1643.84 interest at 12%/a?**

**2) What volume of material with density 4.2g/cm ^3 has a mass of 1.8 kg? Answer to the nearest 0.1 cm^3.**

I was thinking it was the V=D/T equation, but I don't kow what the t would equal. The 1.8 kg? But I thought t= time. So basically I'm confused.

**3) How many metres would you travel in 22 min at 48 km/h?**

Help would be much appreciated! =D

Try to read simple interest

1. simple interest = prt\100

t = 1643.84* 100/1000000

= 16/100 = 8/50 = 4/25.