Q:

A) K = b /a | B) bL = -a |

C) KL = 1 | D) aK = -b |

2
49

Q:

A) 15 | B) 20 |

C) 10 | D) 8 |

Answer & Explanation
Answer: C) 10

Explanation:

Explanation:

Let the price of each note book be Rs.x.

Let the number of note books which can be brought for Rs.300 each at a price of Rs.x be y.

Hence xy = 300

=> y = 300/x

(x + 5)(y - 10) = 300 => xy + 5y - 10x - 50 = xy

=>5(300/x) - 10x - 50 = 0 =>

multiplying both sides by -1/10x

=>

=> x(x + 15) - 10(x + 15) = 0

=> x = 10 or -15

As x>0, x = 10.

1
200

Q:

A) 300 | B) 150 |

C) 175 | D) 200 |

Answer & Explanation
Answer: B) 150

Explanation:

Explanation:

Half of the cloth = 37.5/2

From 1 meter he will make 8 pieces

=> in 37.5/2 ---- ?

37.5/2 x 8

= 150.

1
136

Q:

A) A | B) C |

C) Both A and B | D) All are equal |

2
138

Q:

A) 84521 | B) 87487 |

C) 80578 | D) 78458 |

1
152