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3 years ago

When a number decreased by 10% the result in 63. What is the number?

Mathematics

1 answer:

Ugo [173]3 years ago

4 0

The number is 69.3 because percent means 0.01, so 10 x 0.01 = 1.1
so 1.1 x 63 = 69.3. you can also do 63 x 10% = 69.3.

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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

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

6 0

3 years ago

Which of the following is an example of a measurement of acceleration?

Flauer [41]

Acceleration = speed / time
acceleration = (m/s) / s
acceleration = m/s^2

So the answer is c

6 0

4 years ago

Chris rode his bike along the same route everyday for 60 days. He logged that he had gone exactly 127.8 miles. How many miles di

blagie [28]

127.8/60 = 2.13

Your answer would be that Chris rode his bike 2.13 Miles per day

5 0

3 years ago

Can u pls help me with this question asap

RideAnS [48]

Answer:

Step-by-step explanation:

Basically 90 precent of 100 is 90

7 0

3 years ago

The cost of fencing a square garden at the rate of Rs.5 per

Alex787 [66]

$\huge\underline{\overline{\mid{\bold{\red{ANSWER}}\mid}}}$

Cost per metre = Rs. 5

Total cost = Rs. 2000

Then total length of the fence = Rs.2000/Rs.5

= 400 metre

Total length of the fence = 400 metre

4 0

3 years ago