00:01
In this problem, we're trying to calculate percent change for different quantities.
00:03
So for percent change, we're going to do the new value minus the original divided by original for all of these.
00:11
Okay, so for the first one, it says the quantity decreases from 30 to 25.
00:16
So the new value is 25, original it was 30.
00:20
So we're going to say 25 minus 30, which is negative 5.
00:25
Negative 5 divided by 30 is negative 0 .0.
00:33
16, where 6 is repeating, that's approximately a 0 point, or sorry, it's approximately a 17 % decrease.
00:46
Okay, next, sorry, does say round to one decimal place, so actually, my apologies, that's going to be 16 .6, 16 .7 % decrease.
01:00
Okay.
01:01
Now, next it says the quantity increases from 25 to 30...