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lorasvet [3.4K]
3 years ago
11

The numbers of boys and girls in a class was in the ratio 2:5. After 5 girls were transferred to another class, half of the rema

ining students were boys. How many more girls than boys were there in the class at first?
​
Mathematics
2 answers:
I am Lyosha [343]3 years ago
8 0

Answer:

15

Step by step explanation

Artist 52 [7]3 years ago
6 0

Answer:

15

Step-by-step explanation:

If there are 10 boys and 25 girls, which is a ratio of 2:5, then when 5 girls are transferred, there are 10 boys and 20 girls, meaning half of them are boys, so the class started out with 15 more girls than boys.

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How do I factor the equation in writing this question?
SCORPION-xisa [38]

Step-by-step explanation:

You are just replacing the 'n' with the number in the 'n box'.

So if this is the formula:

b(n) = 4 - (n \div 3)

then:

B(-3)= 4-(-3/3)

B(-3)= 4-( -1)

B(-3)= 4+1

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B(0)= 4-0

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6 0
3 years ago
Can someone help me with 7 1/2 ÷ 1 9/10 please and thank you
Evgen [1.6K]
7 1/2÷ 1 9/10 = 15/2 ÷19/10 = 15/2x10/19 = 159/38 = 4 7/38


4 7/38 (Answer)
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4 0
3 years ago
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I need help with this question
a_sh-v [17]
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7 0
3 years ago
How do I solve these measurement problems?
Natalka [10]
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4 0
2 years ago
The sum of j and 47 is 5
Allisa [31]
Hi there! The answer is j = - 42.

In order to find the value of j, we need to set up and solve an equation.

The sum of j and 47 can be rewritten as
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Subtract 47 from both sides.
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The answer is j = - 42.
~ Hope this helps you!

5 0
3 years ago
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