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A) 15 |

B) 20 |

C) 25 |

D) 30 |

Correct Answer:

B) 20 |

Description for Correct answer:

Number of students who went on picnic = x

Students who planned = x + 5

\( \Large \therefore \frac{500}{x} - \frac{500}{x + 5} = 5 \)

=> \( \Large 500 (\frac{1}{x} - \frac{1}{x+ 5} ) = 5 \)

=> \( \Large 500 (\frac{x + 5 - x}{x (x + 5)} ) = 5 \)

=> x (x + 5) = 500 = 20 (20 + 5)

=> x = 20

Number of students who went on picnic = x

Students who planned = x + 5

\( \Large \therefore \frac{500}{x} - \frac{500}{x + 5} = 5 \)

=> \( \Large 500 (\frac{1}{x} - \frac{1}{x+ 5} ) = 5 \)

=> \( \Large 500 (\frac{x + 5 - x}{x (x + 5)} ) = 5 \)

=> x (x + 5) = 500 = 20 (20 + 5)

=> x = 20

Part of solved Aptitude questions and answers : >> Aptitude

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