Question

1. A man whose income is 576 a year spends 2432 a year. What percentage of his income does he save?
2. If 70% of the students in a school are boys and the number of girls is 540, find the number of boys in
the school?
3. An alloy consists of 13 parts of copper to 7 parts of zinc and 5 parts of nickel. What is the percentage
composition of the alloy?​

Answer 1

Answer:

2 solution.X= 540*100/30 so the total number of students will be 1800

.1 ka solution image me hai.

3Answer. Total parts = 13 + 7 + 5 = 25 . Percentage composition of nickel = 5/25×100 = 20%

Answer 2

Answer:

20 is the correct answer

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