The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?
90
120
220
240

Question

The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1? 1. 90 2. 120 3. 220 4. 240

KnowledgeBoat · Accepted Answer

Given, The total number of students is 720. The initial ratio of boys (B) to girls (G) is 7 : 5. The total number of ratio parts is 7 + 5 = 12. Initial number of boys = = 420. Initial number of girls = = 300. In order to make the ratio 1 : 1, the number of girls and boys must be equal. Thus, 420 - 300 = 120, more girls should be admitted. Hence, option 2 is the correct option.

Mathematics

The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?
90
120
220
240

Ratio Proportion

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2
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Mathematics

The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?90120220240

Ratio Proportion

Related Questions

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The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?
90
120
220
240

Two numbers are in the ratio 7 : 11. If 7 is added to each of the numbers, the ratio becomes 2 : 3. The smaller number is:
39
49
66
77

What must be subtracted from each of 7, 9, 11 and 15, so that the resulting numbers are in proportion?
1
2
3
5