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Two students appeared for an examination. One of them secured 10 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are ? |

A) 52 and 42 B) 68 and 58 C) 63 and 53 D) 15 and 5 Correct Answer :15 and 5 Explanation :Let, the marks of first students be x Then marks of second students be (x + 10) x + 10 = 3/4 (2x + 10) |

A certain company has 120 employees who are engineers. Here, engineers constitute 30% of its work force. How many people are employed in the company? |

A) 500 B) 400 C) 300 D) 200 Correct Answer :400 Explanation :Let the number of employee = X 30% of X = 120 |

23% of a bucket full of diluted milk was water. If the quantity of pure milk in the bucket was 15.4 liter, then the capacity of the bucket was ? |

A) 20 liter
B) 22 liter
C) 20.9 liter
D) 19.8 liter
Correct Answer :20 liter Explanation :capacity of the bucket = X pure milk in bucket = X - 23*X/100 = 15.4 |

If x is 15% of y and y is 40% of z, then x+y is what % of z ? |

A) 6
B) 21
C) 46
D) 55
Correct Answer :46 Explanation :Let z= 100 So, y is 40% of z = 40 x+y= 46 that is 46% of z |