MATHEMATICS MIDDLE SCHOOL

Swimsuit discounted 65% on sale for $20.30.

Answers

Answer 1
Answer:

Answer: The original price of swimsuit is $58.

Step-by-step explanation:

Since we have given that

Sale price of swimsuit = $20.30

Rate of discount =65%

Let the original price of swimsuit be 'x'.

According to question,

(100-65)/(100)* x=20.30\n\n(35)/(100)* x=20.30\n\nx=(100* 20.30)/(35)\n\nx=\$58

Hence, the original price of swimsuit is $58.
Answer 2
Answer: Original price of the swimsuit = x 

If something was discounted 65%, that means you are paying 35% for it. 
(100% - 65% = 35% or 0.35) 

x(0.35) = 20.30

divide both sides by 0.35

x = 58 

The swimsuit was originally 58 dollars. 

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Emily is entering a bicycle race for charity. Her mother pledges $0.10 for every 0.75 mile she bikes. If Emily bikes 18 miles, how much will her mother donate?

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Answer:

A = 21.4 m²

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John must pay a 8.25% tax on his bill. If the bill was $45, how much did he pay for taxes? (Round your answer to the nearest cent)

Answers

Answer:

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Step-by-step explanation:

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Break apart and distribute to solve 72÷872÷8=(40÷8)+(____÷8)
=5+____
=_____

Answers

72 divided by 8 is 9

Farmer Brown has cows and ducks. There is a total of 148 "feet." Figure out how many of each Farmer Brown has. Could someone help me with this question.

Answers

Answer:

See explanation

Step-by-step explanation:

Let c be the number of cows and d be the number of ducks.

c cows have 4c feet, d ducks have 2d feet. In total, c cows and d ducks have

4c + 2d = 148 feet.

Divide it by 2:

2c + d = 74.

This gives us that the number of ducks is even and cannot be 0 (because farmer Brwn has ducks). The minimum possible number of ducks is 2, so the maximum possible number of cows is 36.

All possible answers:

Ducks     Cows

  2             36

  4             35

  6             34

  8             33

  10            32

  12            31

  14            30

  16            29

  18            28

  20           27

  22           26

  24           25

  26           24

  28           23

  30           22

  32           21

  34           20

  36           19

  38           18

  40           17

  42           16

  44           15

  46           14

  48           13

  50           12

  52           11

  54           10

  56           9

  58           8

  60           7

  62           6

  64           5

  66           4

  68           3

  70           2

  72           1

Explain how to simplify this complex fraction. 330pages/3/4hour.

Answers

Answer:
= 330/1 ÷ 3/4

= (330 × 4) / (3 × 1)

= 1320/3

= 440/1

= 440 

Hope this helps! 
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