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Mice21 [21]
2 years ago
15

   In an examination, 15% candidates failed in science and 20% in Mathematics. If 10% failed in both the subjects, find percenta

ge of those who passed in both the subjects.  ​
Mathematics
1 answer:
igor_vitrenko [27]2 years ago
6 0

Answer:

75%

Step-by-step explanation:

The 10% that failed both is part of the 15% and 20% that is mentioned. Subtract 10% from each, leaving you with 5% that failed just science, 10% that failed just math, and 10% that failed both. Add them together and you get 25%. Subtract 25% from 100%, and you remain with 75%.

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Answer:

1)

a) 6x+3 = 27

b) x=4

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Step-by-step explanation:

1. A family buys 6 tickets to a show. They also pay a $3 parking fee. They spend $27 to see the  show.

a)  Decide which equation represents each story. What does x represent in each equation?

Let x be price of one ticket.

The equation will be: 6x+3 = 27

b. Find the solution to each equation. Explain or show your reasoning,

Now solving the equation:

6x+3=27

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6x=24

x=24/6

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So, we get x = 4

c. What does each solution tell you about its situation?

We know that x is price of each ticket, so The price of each ticket is $4. They bought 6 tickets, so total cost of ticket = 24 and $3 for parking so, total money spent = $27.

2. Diego has 27 ounces of juice. He pours equal amounts for each of his 3 friends and has 6  ounces left for himself.

a)  Decide which equation represents each story. What does x represent in each equation?

Let x be amount of juice poured.

The equation will be: 3x+6 = 27

b. Find the solution to each equation. Explain or show your reasoning,

Now solving the equation:

3x+6=27

3x=27-6

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x=21/3

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So, we get x = 7

c. What does each solution tell you about its situation?

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27x+3=6

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27x=3

x=3/27

x=1/9

So, we get x = 1/9

c. What does each solution tell you about its situation?

We know that x is time spend on each picture, so Jada spend 1/9 hour on each picture

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Answer:

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Step-by-step explanation:

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