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:
26 comments Page 2 of 3.
Sanjeev said:
10 years ago
Please explain me Why you have taken 2b/3?
MEHAK said:
9 years ago
A/B = 2/5 X 3/2.
A/B = 6/10.
A/B = 3/5.
Am I right?
A/B = 6/10.
A/B = 3/5.
Am I right?
Tejashri said:
9 years ago
No, @Mehak. It's wrong.
Rekha nayak said:
9 years ago
Please explain to me, why you have taken 2A/5 = 2B/3.
Pratika said:
9 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)
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)
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.
(2)
Narsim said:
8 years ago
You are right, thanks @Pratika.
Aman said:
7 years ago
x,y two number.
40/100*x=2/3y.
2/5*x=2/3*y,
1/5*x=1/3*y,
x=5 y=3.
40/100*x=2/3y.
2/5*x=2/3*y,
1/5*x=1/3*y,
x=5 y=3.
GITARTHA said:
5 years ago
2A/5*2B/3.
NOW A/B=2/5*3/2,
A:B 3:5.
Then why 3:5 is not correct? please Explain.
NOW A/B=2/5*3/2,
A:B 3:5.
Then why 3:5 is not correct? please Explain.
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