# Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 1)

1.

A and B together have Rs. 1210. If of A's amount is equal to of B's amount, how much amount does B have?

Answer: Option

Explanation:

4 | A | = | 2 | B | |

15 | 5 |

A = | 2 | x | 15 | B | |

5 | 4 |

A = | 3 | B |

2 |

A | = | 3 | |

B | 2 |

A : B = 3 : 2.

B's share = Rs. | 1210 x | 2 | = Rs. 484. | ||

5 |

Discussion:

143 comments Page 2 of 15.
Jyoti said:
1 year ago

Listen @Yogesh.

Take A=3x and B=2x.

5x= 1210 => x= 242.

Then B= 2 * 242= 484 Ans.

Take A=3x and B=2x.

5x= 1210 => x= 242.

Then B= 2 * 242= 484 Ans.

(12)

Akbar said:
1 year ago

Well done. Thanks for explaining.

Sindhu said:
1 year ago

Thank you @Ranjeet Kaur.

AKPARIDA said:
1 year ago

Cleared my doubt. Thank you, @Sridhar and @Bhuvi.

Utkalika said:
2 years ago

@Harshita

4/15 is on the left side.

So when we take it to the right side of the equal sign then we reciprocate it i.e., 4/15 becomes 15/4.

The same rule applies from right to left.

4/15 is on the left side.

So when we take it to the right side of the equal sign then we reciprocate it i.e., 4/15 becomes 15/4.

The same rule applies from right to left.

Harshita said:
2 years ago

Why 4/15 turned to 15/4? Please explain.

Yogesh said:
2 years ago

a:b = 3:2 then

b= 2/5 how? Explain.

b= 2/5 how? Explain.

Megha said:
2 years ago

As a total proportion of B is 2/5 of the total so the proportion of b is = 2.

and total proportion is 5; so A's proportion 5-2 = 3.

And B= 2/5 * total = 2/5*1210 = 484.

And A = 1210- 484 = 726.

Thanks.

and total proportion is 5; so A's proportion 5-2 = 3.

And B= 2/5 * total = 2/5*1210 = 484.

And A = 1210- 484 = 726.

Thanks.

Anomie said:
3 years ago

A+B = 1210.

(4/15)A = (2/5)B,

2A = 3B.

Therefore, A = (3B)/2,

and substituting, (3B/2) + B = 1210,

and hence, 5B=2420 => B = 484.

(4/15)A = (2/5)B,

2A = 3B.

Therefore, A = (3B)/2,

and substituting, (3B/2) + B = 1210,

and hence, 5B=2420 => B = 484.

Mahender said:
3 years ago

Thanks @Sridhar.

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