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3 years ago

(3 times X equal to 18 plus X

Mathematics

2 answers:

Natali [406]3 years ago

6 0

It’s

X = 9 if you was looking for x

Leni [432]3 years ago

5 0

The correct answer is x=9

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Mr. Sanchez’s class sold fruit pies for $1.32 each and Mr. Kelly’s class sold bottles of fruit juice for $1.77 each. Together, t

aleksklad [387]

Answer:

Part a)

The quantity of fruit pies sold was $42$

The quantity of juice bottles sold was $48$

Part b) Mr. Kelly’s class earned more money

part c) $\$29.52$

Step-by-step explanation:

Part a)

Let

x-----> quantity of fruit pies sold

y----> quantity of juice bottles sold

we know that

$x+y=90$

$x=90-y$ -----> equation A

$1.32x+1.77y=140.40$ ----> equation B

substitute equation A in equation B

$1.32(90-y)+1.77y=140.40$

$118.8-1.32y+1.77y=140.40$

$0.45y=140.40-118.8$

$0.45y=21.6$

$y=48$ bottles of fruit juice

Find the value of x

$x=90-y$ ------> $x=90-48=42$ fruit pies

Part b) Which class earned more money?

Mr. Sanchez’s class

$\$1.32x=1.32*42=\$55.44$

Mr. Kelly’s class

$\$1.77y=1.77*48=\$84.96$

therefore

Mr. Kelly’s class earned more money

Part c) How much more money did that class earn?

Find the difference

$\$84.96-\$55.44=\$29.52$

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3 years ago

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Alborosie

I'm not sure if an equation is needed. Since you put the marble back into the bag the odds are still 50/50 that you will draw either color.

If you would have left it out then it would be dependent because the ratio would change.

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