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Standard VII
Mathematics
Golden Ratio
What is the r...
Question

What is the ratio of the number of girls enrolled in only Painting classes to the number of boys enrolled in the same?


A

77:26

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B

21:73

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C

26:77

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D

73:21

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E

None of these

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Solution

The correct option is C

26:77


Required ratio = 130:385 = 26:77


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Q.

Study the information carefully to answer the questions:

A school consisting of a total of 1560 students has boys and girls in the ratio of 7:5. All the students are enrolled in different types of hobby classes, viz Singing, Dancing and Painting. One-fifth of the boys are enrolled in only Dancing classes. Twenty percent of the girls are enrolled only Painting classes. Ten percent of the boys are enrolled in only Singing classes. Twenty four percent of the girls are enrolled in both Singing and Dancing classes together. The number of girls enrolled in only Singing classes is two hundred percent of the boys enrolled in the same. One-thirteenth of the boys are enrolled in all the three classes together. The ratio of boys enrolled in Dancing and Painting classes together to the girls enrolled in the same is 2:1. Ten percent of the girls are enrolled in only Dancing classes whereas eight percent of the girls are enrolled in both Dancing and Painting classes together. The remaining girls are enrolled in Singing and Dancing classes together. The number of boys enrolled in Singing and Dancing classes together is fifty percent of the number of girls enrolled in the same. The remaining boys are enrolled in only Painting classes.

What is the ratio of the number of girls enrolled in only Painting classes to the number of boys enrolled in the same?


Q.

Study the information carefully to answer the questions:

A school consisting of a total of 1560 students has boys and girls in the ratio of 7:5. All the students are enrolled in different types of hobby classes, viz Singing, Dancing and Painting. One-fifth of the boys are enrolled in only Dancing classes. Twenty percent of the girls are enrolled only Painting classes. Ten percent of the boys are enrolled in only Singing classes. Twenty four percent of the girls are enrolled in both Singing and Dancing classes together. The number of girls enrolled in only Singing classes is two hundred percent of the boys enrolled in the same. One-thirteenth of the boys are enrolled in all the three classes together. The ratio of boys enrolled in Dancing and Painting classes together to the girls enrolled in the same is 2:1. Ten percent of the girls are enrolled in only Dancing classes whereas eight percent of the girls are enrolled in both Dancing and Painting classes together. The remaining girls are enrolled in Singing and Dancing classes together. The number of boys enrolled in Singing and Dancing classes together is fifty percent of the number of girls enrolled in the same. The remaining boys are enrolled in only Painting classes.

Number of girls enrolled in only Dancing classes in what percent of the boys enrolled in the same? (round off to two digits after decimal)


Q.

Number of girls enrolled in only Dancing classes is what per cent of the boys enrolled in the same? (rounded off to two digits after decimal)


Q. The number of girls enrolled in only dancing classes is what percent of the boys enrolled in the same? Round off your answer to two digits after the decimal.
Q.

What is the ratio of the number of girls enrolled in swimming to the number of boys enrolled in swimming?


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