Question

18) If a student had five hours of homework and has
worked for three and a half hours, what part of his
homework is yet to be done?
A) 1/3 part
B) 2/3 part
C) 3/10 part
D) 2/5 part​

Answer 1

Answer:

c 3/10

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Answer 2

Option(C) 3/10 is the correct answer.

Given,

The total hours required for homework = 5 hours

A student has done hours of homework = 3 and half hours

To Find,

The part of his homework is yet to be done =?

Solution,

The total hours required for homework = 5 hours

A student has done hours of homework = 3.5 hours

The part of homework done by student = 3.5 / 5

The part of homework done by student = 35 / 50 = 7 / 10

The part of his homework that is yet to be done = 1 - Part of homework done

The part of his homework that is yet to be done = 1 - 7 / 10

The part of his homework that is yet to be done = (10 - 7)/10

The part of his homework that is yet to be done = 3 / 10

Hence, 3/10 part of his homework is yet to be done.