A bottling machine filled 3 of every 8 bottles with grape juice. The bottling machine filled 144 bottles altogether.

How many of these bottles were filled with grape juice?

Question

A bottling machine filled 3 of every 8 bottles with grape juice. The bottling machine filled 144 bottles altogether.
 
How many of these bottles were filled with grape juice?

greencat · Answer

Total=144

greencat · Answer

3/8 of Total are grape
so:
3/8 of Total=Answer

greencat · Answer

Let's translate this into math:
of means multiply

greencat · Answer

3/8 of Total=Answer
       $\downarrow$
3/8 * Total=Answer

greencat · Answer

Can you continue from here?

anonymous · Answer

yes and thank you @GreenCat

greencat · Answer

^_^

anonymous · Answer

can you help me with one more @GreenCat

greencat · Answer

yes

anonymous · Answer

The ratio of the perimeters of two rectangles is 5 to 8. The perimeter of the larger rectangle is 72 inches. What is the perimeter of the smaller rectangle?
 
 A.
115.2 inches
 
 B.
45 inches
 
 C.
40 inches
 
 D.
16.4 inches

anonymous · Answer

@GreenCat

greencat · Answer

Basically, you use the ratio to figure out the perimeter.

greencat · Answer

The smaller triangle's perimeter should be 5/8 of the larger triangle

greencat · Answer

Do you understand how I got that?

anonymous · Answer

but what would that be in decimal form @GreenCat

greencat · Answer

remebmer that "of" means multiply
so 5/8 *72

greencat · Answer

which would be 45

anonymous · Answer

thanks @GreenCat

greencat · Answer

ok bye