Question

5. 70% of the students in a school are boys and the number of girls is 504. Find the number of
boys in the school.
An ore contains 12% copper. How many kilograms of the ore are required to get 69 kg​

Answer 1

Answer:

1176

Step-by-step explanation:

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