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nydimaria [60]
4 years ago
12

In a school of 1800 students, the ratio of teachers to students is 1:20. Some teachers join the school and the ratio changes to

1:18. Find the number of teachers who joined the school.
PLEASE IMA GET A EMAIL HOME!!!
Mathematics
1 answer:
blagie [28]4 years ago
4 0

Answer:

10 teachers

Step-by-step explanation:

Looking at the data provided, we can conclude that for 1800 students, there are 90 teachers.

1:20

When more teachers arrive, it then becomes, for every 1800 students, there are 100 teachers.

1:18

10 more teachers have now joined the school.

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If a pair of shoes cost $40 and they are on sale for 30% off how much would they be
yulyashka [42]

multiply 40 by 30% to find the discount then subtract

40 * 0.30 = 12

40-12 = 28

they would cost $28

6 0
3 years ago
Um litro de suco é dividido entre três amigos. O primeiro fica com 14 do todo, o segundo fica com 1/3 do total e o terceiro fica
kkurt [141]

Answer:

a) 1/24 do total

Step-by-step explanation:

We have that:

The total is 1.

The first friend gets 1/4 of the total.

The second friend gets 1/3 of the total

The third friend gets 3/8 of the total.

The remaining is x.

So

\frac{1}{4} + \frac{1}{3} + \frac{3}{8} + x = 1

The least common multiple between 4, 3 and 8 is 24. So

\frac{6 + 8 + 3*3 + 24x}{24} = 1

23 + 24x = 24

24x = 1

x = \frac{1}{24}

So the correct answer is:

a) 1/24 do total

3 0
3 years ago
If my phone lock consisted of 3 single-digits and 3 numbers, how many possible codes are there?
Kruka [31]

Answer:

1,000 different combinations are possible

Step-by-step explanation:

Because if youre lock ckntained 3 single digit numbers it would have to be 0-9 so each digit would have 10 options so there would be 1,000 different combinations that are possible.

8 0
3 years ago
Guys pls help me!!!!!!
Mekhanik [1.2K]

Answer:

x=79

Step-by-step explanation:

180-101=79

Jesus loves you!

6 0
2 years ago
Read 2 more answers
67 2 3 % of the animals at an animal shelter are dogs. About what fraction of the animals at the shelter are dogs?
Strike441 [17]

Answer:

About 2/3 of the animals at the shelter are dogs

Step-by-step explanation:

Let's first transform the mixed number to the corresponding improper fraction.

67 2/3 is equivalent to (3*67 + 2)/3 = 203/3

we are asked to find a fraction equivalent to 203/3%. To do this, we have to divide the fraction by 10, as follows:

203/3% = (203/3)*(1/100) = 203/300 ≈ 2/3

4 0
3 years ago
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