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irinina [24]
3 years ago
13

PLEASE HELP MEEEEEEEEEE

Mathematics
1 answer:
ololo11 [35]3 years ago
4 0

Answer:

Step-by-step explanation:

step 2 is incorrect.

step 2: -40-75+100+200

step 3:  -115+300

step 4 : 185

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in a school gym, the ratio of the number of boys to the number of girls was 4:3 . after 160 boys left the gym, the ratio became
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Answer:

300 girls were there in the gym.

Step-by-step explanation:

Given:

The ratio of the number of boys to the number of girls was 4:3, after 160 boys left the gym, the ratio became 4:5.

Now, to find the number of girls in the gym.

The girls in the gym does not left, their quantity is same before and after.

So, we multiply the both ratios to make the girls ratio same:

4:3 × 5 = 20:15

4:5 × 3 = 12:15

Now, <em>we find the units of the ratio</em>.

<em>The ratio of boys dropped down by 160</em>:

20 - 12 = 8 units.

160 = 8 units

Now, dividing both sides by 8 we get:

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So, 1 unit = 20.

Now, girls = 15 units

So, 15 × 20 = 300.

Therefore, 300 girls were there in the gym.

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3 years ago
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Step-by-step explanation:

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