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

Answer»

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



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