The students in 3 hatches in school are in the ratio 2:3:5. If 20 studen & in each hatch are increased than the ratio changes to 4:5: 7. Find the total number of students in the 3 before the increase.
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Answered by
2
Answer:
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Step-by-step explanation:
If 20 students are increased, (i)The students in the three batches became (2x+20), (3x+20) and (5x+20). (ii)The ratio changes to 4:5:7. ... Hence, number of students in the three batches before the increase were 20, 30 and 50
Answered by
2
Answer:
Number of students in hatch 1=20
Number of students in hatch 2=30
Number of students in hatch 3=50
Step-by-step explanation:
(2x+20)+(3x+20)+(5x+20)=4x+5x+7x
10x+60=16x
-6x=-60
x=-60/-6
x=10
2x=10*2
=20
3x=10*3
=30
5x=10*5
=50
Hence the number of students the three hatches 1,2,3 respectively are
20,30and50
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