# Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 2)

2.

Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:

Answer: Option

Explanation:

Let the third number be *x*.

Then, first number = 120% of x = |
120x |
= | 6x |

100 | 5 |

Second number = 150% of x = |
150x |
= | 3x |

100 | 2 |

Ratio of first two numbers = | 6x |
: | 3x |
= 12x : 15x = 4 : 5. |
||

5 | 2 |

Discussion:

126 comments Page 12 of 13.
Manimekalai.v said:
1 decade ago

Ganapathy method is good.

Priyabrata Muduli said:
1 decade ago

Sathi's concept is right.

Kunal said:
1 decade ago

Why take third number as 100?

Naveen said:
1 decade ago

Take 10 and 20% more than 10 is 12 and 50% more than 10 is 15 so the ratio is 12:15 which is nothing but 4:5 .

Haseeb Siddiqi said:
1 decade ago

Ramesh's method is good and easy.

Sruthi said:
1 decade ago

Sathi's concept is right.

Sathi said:
1 decade ago

Take A,B,C as three numbers

A is 20% more than C

A=C+20%of C=C+0.2C=1.2C

same way

B=C+50%of(C)=C+0.5C=1.5C

ratio A/B=1.2C/1.5C=4/5

Ans 4/5

A is 20% more than C

A=C+20%of C=C+0.2C=1.2C

same way

B=C+50%of(C)=C+0.5C=1.5C

ratio A/B=1.2C/1.5C=4/5

Ans 4/5

Sumit said:
1 decade ago

Let it be of 100. It is most convennience.

SUGANYA.P said:
1 decade ago

I do know understand this concepts please explain.

Sathya said:
1 decade ago

Let 3rd no is x

20%of x=(20/100)*x

50%of x=(50/100)*x

1/5x:1/2x

ans=2:5

20%of x=(20/100)*x

50%of x=(50/100)*x

1/5x:1/2x

ans=2:5

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