Question

The number of girls speaking only Hindi is what per cent of the total number of students speaking only Hindi?

• A. $38.2\%$
• B. $71.8\%$
• C. $31.2\%$
• D. $78\%$
• E. None of these

Answer 1

The correct option is E None of these

Number of boys $=150$
Number of girls $=250$
Boys who speak only Hindi $=\frac{12\times 150}{100}=18$
Boys who speak Hindi and English = $18\times 6=108$
Girls who speak only English
$=\frac{22\times 250}{100}=55$
Girls who speak only Hindi
$=\frac{400\times 24}{100}-18=96-18=78$
Girls who speak Hindi and English $=250-78-55=117$
Boys who speak only English $=150-108-18=24$
Required percentage $=\frac{78}{96}\times 100=81.25\%$