Question

If a student scores
35% marks in a test
then he is failed by
42 marks, but when
he
scores
48%
marks in the same
test, he is passed by
62 marks. Find the
passing percentage
for the test.​

Answer 1

Answer:

answer is 322 marks which is 40.25 %.

where,

35% ----- 42marks less than passing marks

48% ----- 62marks more than passing marks

so now, addition of marks 42+62 =104

and difference of percentage 48% - 35% =13%

13%-------> 104 marks

100%------> ??(x)

x = 100*104/13

= 800. ( as percentage cancels)

The total marks is 800

now, 35% of total marks 800 = (35/100)*800= 280 The student got 280 marks (35%) for 1st time,if we add 280+42 = 322 ( why addition of 42, because he needs 42 marks more to pass)

322 is the passing marks.

The passing percentage of test is (322/800)*100 = 40.25%