RRB RPF RPSF SI and CONS Model Papers 1 with solutions

Question : 23 of 120

Marks: +1, -0

In the annual examination Mahuya got 10% less marks than Supriyo in Mathematics. Mahuya got 81 marks. The marks of Supriyo are

Solution:

(b) Marks of Supriyo = x marks
Accoding to question
Mahuya marks = Supriyo marks – 10% of Supriyo marks

81 = { x } - 10 \%

x ⇒ x ( 1 - { 10 } /{ 100 } )

81 = { 9 }/ { 10 } x ⇒ { 810 } /{ 9 } = x

∴ x = 90

marks

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