Get Started with ixamBee
Start learning 50% faster. Sign in now
Let the Number of boys and Girls who appeared in exam be x and y respectively, So, according to question- Number of boys passed in exam = [(100 - 20) × x]/100 = 0.80x Number of girls passed in exam = [(100 - 15) × y]/100 = 0.85y Condition (1) - ⇒ 0.80x = 0.85y + 70 ⇒ 0.80x - 0.85y = 70 ...(i) Condition (2) - Total failed students = 90 ⇒ 0.20x + 0.15y = 90 ...(ii) From eqn (1) - [4 × eqn (ii)] ⇒ (-0.85y) - 0.60y = 70 - 360 ⇒ 1.45y = 290 ⇒ y = 200 Put this value in eqn (i) ⇒ 0.80x = 0.85 × 200 + 70 ⇒ 0.80x = 170 + 70 = 240 ⇒ x = 300 So, total number of students appeared in exam = 300 + 200 = 500.
If 'A # B' means 'A is mother of B', 'A @ B' means 'A is brother of B', 'A % B' means 'A is sister of B', 'A $ B' means 'A is father of B'. In expressio...
If F$G@E*D is true, the how is D related to son of G?
How is J related to L if ‘D @ G & J ? M # L’ is true?
If G @ H & I % J @ L ^ K then how is J related to H?
If A%B means ‘A is daughter of B’ A@B means ‘A is wife of B’ A$B means ‘A is son of B’ A#B means ‘A is brother of B’ then in expression ...
How is U related to S if ‘R+S@T$W#U? V’ is true?
If A × B means that A is the brother of B, A – B means that A is the sister of B, A + B means that A is the father of B then which of the following e...
If ‘L#H$I@G?W*K’ is true, then, how is K related to L?
In the given relationship, ____ is related to ____ in the same way as M is related to E.
Statements: T ≥ S > H = O, R ≥ M > H
Conclusions : I. S > M II. R > O
