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Cerrena [4.2K]
3 years ago
6

What is the answer to this I don’t because I can’t do fractions

Mathematics
2 answers:
Artist 52 [7]3 years ago
7 0

So basically this is adding fractions with uncommon denominators.

2/5 + 1/4=

(2 x 4) + (1 x 5)

--------------------

      5 x 4

So, your answer should be 13/20.

If you'd like me to elaborate more I will be happy to help.

dimulka [17.4K]3 years ago
5 0

Answer:

13/20 of a mile

Step-by-step explanation:

2/5 = 8/20

1/4 = 5/20

8/20 + 5/20 = 13/20

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nikklg [1K]

Answer:

He will run 60 kilometers.

Step-by-step explanation:

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2 years ago
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The volume of construction work was increased by 60% but the productivity of labor increased by only 25%. By what percent must t
Sergeu [11.5K]

Answer: 28 %

Step-by-step explanation:

Let, Initially,

V be the volume of construction work

r be the productivity of labor  

n be the number of days

x be the number workers.

Thus,  V  = r × n × x   ------------(1)      

Now, According to the question,

The volume of construction work was increased by 60% but the productivity of labor increased by only 25%.

Therefore,

Final volume of the work = 160% of V = 1.6 V

Final productivity = 125% of r = 1.25 r

Also, the time is same in both conditions,

Final time taken = n

Let y be the number of people after changes.

Thus, 1.6 V = 1.25 r × n × y -----(2)

Dividing equation (1) by equation (2)

We get, y = 1.60 x/1.25

Thus, the changes in the number of workers

= \frac{(\frac{1.60x}{1.25}-x) }{x}\times 100

= 0.28 × 100

= 28 %


5 0
3 years ago
Race drivers must complete 200 laps in the Daytona 500. if Ticky Bobby only completed 57% of the race, how many laps did he co
Nat2105 [25]

Answer:

<u>114 laps</u>

Step-by-step explanation:

Multiply 200 x 57% :

  • 200 x 57%
  • 200 x 57/100
  • 2 x 57
  • <u>114 laps</u>
6 0
2 years ago
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