Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 10)
10.
If Rs. 782 be divided into three parts, proportional to : : , then the first part is:
Rs. 182
Rs. 190
Rs. 196
Rs. 204
Answer: Option
Explanation:

Given ratio = : : = 6 : 8 : 9.

1st part = Rs. 782 x 6 = Rs. 204
23

Discussion:
103 comments Page 4 of 11.

Priya said:   2 decades ago
The LCM of all the denominators is 12. So multiply the number and denominator with 6 to make 1/2 as 6/12, multiply 2/3 with 4. So that it becomes 8/12 and multiply 3/4 with 3 to make 9/12. Now the new ratio will be:

6/12, 8/12, 9/12.

Now cancelling 12 we will get 6, 8, 9.

Angel said:   2 decades ago
You just need to multiply every ratio by 12 because it is the lcm of denominators.

Sushil M said:   2 decades ago
In wat way the ratio 1/2 : 2/3 : 3/4 is written as 6:8:9 ?

How's its come can u explain clearly ????

Kannan said:   2 decades ago
Taking lcm for 2, 3, 4 and we got 12. Then the numerators 6, 8, 9 were used.

Hemant said:   2 decades ago
1/2 : 2/3 : 3/4 is written as 6:8:9 ?
plz explain

Suman said:   2 decades ago
1/2:2/3:3:4 is written as 6:8:9

how can you explain? plz explain clearly.

Shalu said:   2 decades ago
1:2 is multiplyed by 6/6 then it will be 6/12,in second case 2:3 is multiplyed by 4/4 then 8/12, and 3:4 multyplyed by 3/3 then 9/12; it is done because of doing denominators equal,new ratio becomes 6:8:9.

Sanchit said:   1 decade ago
Good ranjani. Your method is good :)

Raj said:   1 decade ago
See their value is 1/2:2/3:3/4

Then take LCM 2,3,4 it's come 12

Then, (1/2:2/3:3/4)/12

Then 12/2=6 then 6*1=6
12/3=4 then 4*2=8
12/4=3 then 3*3=9

This way we find the 6:8:9.

Sushma said:   1 decade ago
The given ratios are=1/2:2/3:3/4

Then take the LCM Of the denominator of ratios(2,3,4=12)

Then divide each ratio with 12. for eg:- 1/2*12=6.


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