On the basis of this topic today the teacher told the students to do a survey in class VII. There were total 108 students in class VII. In the class students were having only three colours of eyes blue, 5 green and brown. Students came with the result that of the students have brown eyes, have blue 18 5 9 eyes. a) What fraction of the class have green eyes? 1 1) 18 2 ii) 18 3 111) 18 4 iv) 18 b) How many students have green eyes in the class? i) 15 ii) 16
Answers
Answer:
Bro I can't understand the q . Can you use / this symbol for fraction . Okay ? After that I can help you
Answer:
( a ) iii. 3 / 18 ( b ) iv. 18 ( c ) iii. 60 ( d ) iii. 30
Step-by-step explanation:
No. of students = 108
Students who had brown eyes = 5 / 9 = ( 5 * 108 ) / 9 = 5 * 12 = 60
Students who had blue eyes = 5 / 18 = (5 * 108) / 18 = ( 5 * 12 ) / 2 = 5 * 6 = 30
Students who had green eyes=108-remaining = 108 - 60 + 30 = 108 - 90 = 18
Now coming to the options
( a ) ( 5 / 9 ) + ( 5 / 18 ) + ( x ) = 1
= 10 / 18 + 5 / 18 + x= 1
= 15 / 18 + x = 1
( iii ) x = 3 / 18
( b ) ( iv ) 18 ( Already answer given )
( c ) ( iii ) 60 ( Already answer given )
( d ) ( iii ) 30 ( Already answer given )