The ratio of boy & girl in the class is 10:7. If number of boys is 9 greater than the girls. How many students present in the class.
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Let boys be x
and girls be y
the ratio is 10 x and 7x
7x + 9 = 10 x
3x = 9
x = 3
Now the total no. of students are 17x
17(3)
51 Students is the answer
and girls be y
the ratio is 10 x and 7x
7x + 9 = 10 x
3x = 9
x = 3
Now the total no. of students are 17x
17(3)
51 Students is the answer
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