A) 10 | B) 15 |

C) 20 | D) 25 |

Explanation:

20 large cakes will require the equivalent of 10 helpers working for one hour. 700 small cakes will require the equivalent of 20 helpers working for one hour. This means if only one hour were available we would need 30 helpers. But since three hours are available we can use 10 helpers.

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**