A) Rs. 169.50 | B) Rs.1700 |

C) Rs. 175.50 | D) Rs. 180 |

Explanation:

Since first second varieties are mixed in equal proportions, so their average price = Rs.(126+135/2) = Rs.130.50

So, the mixture is formed by mixing two varieties, one at Rs. 130.50 per kg and the other at say, Rs. x per kg in the ratio 2 : 2, i.e., 1 : 1. We have to find x.

Cost of 1 kg tea of 1st kind Cost of 1 kg tea of 2nd kind

x-153/22.50 = 1 => x - 153 = 22.50 => x=175.50.

Hence, price of the third variety = Rs.175.50 per kg.

A) 6 ml | B) 11 ml |

C) 15 ml | D) 9 ml |

Explanation:

Let us assume that the lotion has 50% alcohol and 50% water.

ratio = 1:1

As the total solution is 9ml

alcohol = water = 4.5ml

Now if we want the quantity of alcohol = 30%

The quantity of water = 70%

The new ratio = 3:7

Let x ml of water be added

We get,

=> x=6

Hence 6ml of water is added.

A) 25% | B) 30% |

C) 17% | D) 19% |

Explanation:

He has gain = 15 - 12 = 3,

Gain% = (3/12) x 100 = (100/4) = 25.

He has 25% gain.

A) 27 % | B) 26 % |

C) 29 % | D) 21 % |

Explanation:

Let the percentage of benzene = X

(30 - X)/(X- 25) = 6/4 = 3/2

=> 5X = 135

X = 27

So, required percentage of benzene = 27 %

A) 24.52 litres | B) 29.63 litres |

C) 28.21 litres | D) 25.14 litres |

Explanation:

Given that container has 50 litres of milk.

After replacing 8 litres of milk with water for three times, milk contained in the container is:

= 29.63 litres.