Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 11)
11.
The salaries A, B, C are in the ratio 2 : 3 : 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be new ratio of their salaries?
Answer: Option
Explanation:
Let A = 2k, B = 3k and C = 5k.
| A's new salary = | 115 | of 2k = |  |
115 | x 2k |  |
= | 23k |
| 100 | 100 | 10 |
| B's new salary = | 110 | of 3k = | |
110 | x 3k | |
= | 33k |
| 100 | 100 | 10 |
| C's new salary = | 120 | of 5k = | |
120 | x 5k | |
= 6k |
| 100 | 100 |
 New ratio |
|
23k | : | 33k | : 6k | |
= 23 : 33 : 60 |
| 10 | 10 |
Discussion:
34 comments Page 3 of 4.
Rachana said:
1 decade ago
What is this k stands for ?
Prabhu said:
1 decade ago
Here k denotes the common multiplication number in all the 3 given ratio.
Boomadevi said:
1 decade ago
Why add this value 100+15?
Preety said:
1 decade ago
We can do like
15% of 2= 15/100*2=3/10 total value=2+3/10=23/10
10% of 3= 10/100*3=3/10 total value=3+3/10=33/10
20% of 5= 20/100*5=1 total value=5+1=6
New proportion is
23/10:33/10:6
or 23:33:60 ans.
15% of 2= 15/100*2=3/10 total value=2+3/10=23/10
10% of 3= 10/100*3=3/10 total value=3+3/10=33/10
20% of 5= 20/100*5=1 total value=5+1=6
New proportion is
23/10:33/10:6
or 23:33:60 ans.
Vijay raja said:
1 decade ago
115 is taken because
A'Value has increased by 15%.
Now we can find new salary of A in two ways:
1st way:
THEORY:Step 1: Calculating 15% in original salary ( i.e 2k)
Step 2: And then adding it to the original value to get increased salary.
Calculation:Step 1: (15/100)*2k= 3k/10
Step 2: (3k/10)+2k=23k/10
2nd way:
THEORY: If we consider 100% is the original value.
15% is increased
therefore 100%+15%=115%
115% of 2k gives 15% increased salary + original salary
NOTE:here we need only one step to calculate new salary.
CALCULATION: (115/100)*2k=23k/10
A'Value has increased by 15%.
Now we can find new salary of A in two ways:
1st way:
THEORY:Step 1: Calculating 15% in original salary ( i.e 2k)
Step 2: And then adding it to the original value to get increased salary.
Calculation:Step 1: (15/100)*2k= 3k/10
Step 2: (3k/10)+2k=23k/10
2nd way:
THEORY: If we consider 100% is the original value.
15% is increased
therefore 100%+15%=115%
115% of 2k gives 15% increased salary + original salary
NOTE:here we need only one step to calculate new salary.
CALCULATION: (115/100)*2k=23k/10
Narayana Rao Gartam said:
1 decade ago
Hai @Asma, Try below:
Ans, is 10 years.
Say, present age is = X,
After 20 years man age will be 3X = X+20.
i.e, 3X = X+20.
3X-X = 20.
X = 10.
Results, the man present age is 10 years.
Ans, is 10 years.
Say, present age is = X,
After 20 years man age will be 3X = X+20.
i.e, 3X = X+20.
3X-X = 20.
X = 10.
Results, the man present age is 10 years.
Harshit Anand said:
8 years ago
@Abhinav Kumar.
Why the 10 and x gets cancelled in above question of Ratio and Proportion?
Why the 10 and x gets cancelled in above question of Ratio and Proportion?
Radhika said:
1 decade ago
Preety shortcut is nice.
Rupali Palande said:
1 decade ago
New ratio of their salaries,
115*2=230.
110*3=330.
120*5=600.
i.e 230:330:600.
i.e 23:33:60.
115*2=230.
110*3=330.
120*5=600.
i.e 230:330:600.
i.e 23:33:60.
Raju kollati said:
10 years ago
110/100 = 1.1.
1.1 * 3 = 3.3.
1.1 * 3 = 3.3.
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