Let the third number be 100.

Then, the first number = 100 - 20 = 80 and second number = 100 - 30 = 70.

Difference between the first and second number = 80-70 = 10

Required percentage = %

A) 60% | B) 40% |

C) 50% | D) 30% |

Explanation:

Lets say shyam sells at 100,

Since Ram sells 25% cheaper than Shyam,

Therefor Ram sells at less than 25% of100 or 75 rs.

Ram sells 25% dearer than Bram or 125% of Ram =100% of Bram or

125% of x (say x price of bram )=75rs.

or 100% of x =60rs.

hence price of bram is 60rs.

now Bram's good is cheaper than Shyam's as (100-60)x100/100% or 40%.

Hence Brams Good is 40% cheaper than that of Shyam's good.

A) 40% is better | B) 70% is better |

C) Both are same | D) None |

Explanation:

Let Price be Rs.100

1st CASE:

Then 100 x 70/100 = 70

=> price after discount = 100-70 = Rs.30

2nd CASE:

Then 100 x 40/100 = 40

=> price after discount = 100-40 = Rs.60

then

60 x 30/100 = 18

=> price after 2 consequent discount = 60-18 = Rs.42

=>from 1 and 2 cases, 70% discount is better.

A) 19.32 % | B) 18.75 % |

C) 21.41 % | D) 22 % |

Explanation:

Prashanth sold a album for $ 735 and made a profit of 22.5% .

CP = 735 x 100/122.5 = Rs. 600

New CP = 600 + 120 = Rs. 720

New SP = 735 + 120 = Rs. 855.

Profit = Rs. 135.

profit % = 100 x 135/720 = 18.75%.

A) Rs. 6000 | B) Rs. 3600 |

C) Rs. 2160 | D) Rs. 415 |

Explanation:

End of first year : 10000 x (3/5) = Rs. 6000

End of second year : 6000 x (3/5) = Rs. 3600

End of third year : 3600 x (3/5) = Rs. 2160

A) 76% | B) 72% |

C) 80% | D) 82% |

Explanation:

circumference of A = = 8 => so r =

volume = =

circumference of B = = 10 => so r =

volume = =

so ratio of capacities = 160/200 = 0.8

so capacity of A will be 80% of the capacity of B.