The bar graph below shows the percentage break-up of the number of student who visited various touris spots on new Year evening.

The table shows the total numbers of students om classes X,XI and XII .
`{:("Class","No. of students"),(X,420),(XI,480),(XII,400):}`
If the ratio of girls and boys, who went to Manali from class X, was `7:8` , then what percent of the total number of students from class X who went to a turist spot is the number of girls who went to Manali ? (approximate)

Options

A. 0.19
B. 0.23
C. 0.25
D. 0.15

Answer

A

Explanation

No. of students from class X who visited Manali
`=(60)/(100)xx250=150`
No. of girls from class X who visited Manali
`=(7)/(15)xx150=70`
Total no. of studetn from classes X who went to a tourist place

`=(20)/(100)xx150+(30)/(100)xx200+(60)/(100)xxxx350+(20)/(100)xx200`
`=30+60+150+91+40=371`
Required `%=(70)/(371)xx100~~19%`