00:01
So in this question, a baker is building a rectangular solid box from cardboard to be able to safely deliver a birthday cake.
00:08
The baker wants the volume of the delivery box to be 540 cubic inches.
00:14
If the width of the delivery box is 3 inches longer than the length and the height is 4 inches longer than the length, what must the length of the delivery box be? so we have this delivery box and we are going to have length times width times height.
00:40
That's how i find volume.
00:42
So my volume is length times width times height.
00:47
And i want this to be equal to 540.
00:51
Now they said that the width of the delivery box is three more than the length.
00:58
So my width is going to be l.
01:02
Plus 3 this time.
01:05
Now the height is 4 inches longer than the length.
01:09
That means my height is l plus 4.
01:14
And we want this product to be equal to 540.
01:18
And i am trying to solve for the length.
01:22
So what am i going to do? well, the easiest thing to do this time is probably just to guess and check.
01:30
So for example, since this is multiple choice, try 10...