A) 162 | B) 138 |

C) 60 | D) None of these |

Explanation:

Physics Chemistry

Failed 35% 45%

Passed 65% 55%

Passed in both = 22% of total student

percentage of students who are passed in any of the physics or chemistry or both =(65+55) - 22 = 98%

So, the percentage of students who are failed in both = 2%

Therefore, total failed (in both subjects) students = 12

A) 264 | B) 220 |

C) 241 | D) None |

Explanation:

Given 56% of 225 + 20% of 150 = **?** - 109

we know that **a% of b = b% of a**

Now,

225% of 56 + 20% of 150 = ? - 109

200% of 56 + 25% of 56 + 20% of 150 = ? - 109

112 + 14 + 30 = ? - 109

? = 112 + 14 + 30 + 109

**? = 264**

A) 102 & 6 | B) 99 & 3 |

C) 104 & 8 | D) 100 & 4 |

Explanation:

Let the first number be x and the second number be y.

Given

**5% of x = (25% of y) + y**

=> 5x/100 = 5y/4

=> x = 25y ......(1)

and also given that, x - y = 96

=> x = 96 + y .....(2)

From (1)&(2)

25y = 96 + y

=> 24y = 96

=> y = 4

From (1)

x = 96 + 4 = 100

Hence, the numbers are **100 & 4.**

A) 1889.95 | B) 1912.35 |

C) 1875.25 | D) 1950.50 |

Explanation:

**83% of 2350 = ?**

A) 29.87% | B) 33.33% |

C) 22.22% | D) 19.5% |

A) 4:3 | B) 5:4 |

C) 4:5 | D) 3:4 |

Explanation:

Given 15% of x = 20% of y

=> 15x = 20y

=> x/y = 20/15

=> **x : y = 4 : 3**