Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 12)
12.
If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
Answer: Option
Explanation:
| Let 40% of A = | 2 | B |
| 3 |
| Then, | 40A | = | 2B |
| 100 | 3 |
 |
2A | = | 2B |
| 5 | 3 |
| |
A | = |  |
2 | x | 5 |  |
= | 5 |
| B | 3 | 2 | 3 |
A : B = 5 : 3.
Discussion:
25 comments Page 1 of 3.
Sinchana said:
4 years ago
Let the two numbers be x and y.
Given 40%(x)=2/3 * (y).
Solving;
40/100*(x) = 2/3*(y),
2/5*(x)=2/3*(y),
x/y = 5/3= 5:3.
Given 40%(x)=2/3 * (y).
Solving;
40/100*(x) = 2/3*(y),
2/5*(x)=2/3*(y),
x/y = 5/3= 5:3.
(5)
Sasi said:
4 years ago
Here, given 40% a number = another number 2/3.
we can assume first num = a , second num = b.
Now 40% a = 2/3b.
We have % convert to 40/100 = 2/5.
2/5a = 2/3b,
a/b = (5/2)*(2/3),
a/b = 5/3.
So, the answer is a:b = 5:3.
we can assume first num = a , second num = b.
Now 40% a = 2/3b.
We have % convert to 40/100 = 2/5.
2/5a = 2/3b,
a/b = (5/2)*(2/3),
a/b = 5/3.
So, the answer is a:b = 5:3.
(3)
Manjuu said:
5 years ago
Good explanation, thanks all.
(3)
Nivi said:
1 decade ago
Why we took 40% of number 40/100 instead of 140/100?
(1)
Neemish said:
8 years ago
40A/100=2B/3.
Cross multily we get,
120A=200B,
A/B=200/1200.
A/B=5:3.
Cross multily we get,
120A=200B,
A/B=200/1200.
A/B=5:3.
(1)
Sairocky said:
8 years ago
40%=40/100*2/3(nothing but two-third),
divide by 20 you will get 2/5*2*3,
Cross multiplication.
10:6(both come in 2 table).
5:3.
divide by 20 you will get 2/5*2*3,
Cross multiplication.
10:6(both come in 2 table).
5:3.
(1)
Pratika said:
8 years ago
Given 40% i.e 40/100 = 2/5;
New ratio 2/5 : 2/3 = 6/10 = 3/5.
New ratio 2/5 : 2/3 = 6/10 = 3/5.
(1)
Tejashri said:
9 years ago
No, @Mehak. It's wrong.
Pagadala Vaishnavi said:
3 months ago
40/100 = 2/3x.
x = 40/100 * 3/2.
x = 120/200,
x = 3/5,
= 5 : 3.
x = 40/100 * 3/2.
x = 120/200,
x = 3/5,
= 5 : 3.
Subha said:
9 months ago
2A/5 = 2B/3.
2A/5 ×15 = 2B/3×15,
6A = 10B.
A/B = 5/3.
2A/5 ×15 = 2B/3×15,
6A = 10B.
A/B = 5/3.
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