The ratio of the number of boys to the number of girls in a school with 8 students was 7:5 .In the new session ,the number of boys increased by 20 and the ratio of boys is to girls is changed to 6:5 .Calculate the number of girls
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Answer:
7x + 5x = 1440
X= 1440/12
X = 120
Boys = 7x = 840
Girls = 5x = 600
If 40 boys added
Boys = 880
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