1.

70% of the student in a school are boys and the number of girls is 504. Find the number of boys in the school.

Answer»

Let the total number of students be 100

Then, as per the question 70% of boys = 70

Number of girls = 30

Now, total number of students when the number of girls is 30 = 100

Then, total number of students when the number of girls is 504 = (100/30) × 504

= 1680

Total number of boys = 1680 – 504

= 1176

∴the number of boys in a school is 1176



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