Question

4:65 which is equal to which ratio 1)5:124 2) 7:50 3)3:82 4)7:344​

Answer 1

Step-by-step explanation:

4/65=0.0616

5/124=0.04

7/50=0.14

3/82=0.036

7/344=0.02 and is (2)

if more than 0.5 is then we can take as 1 so based on that it is nearly equal to options 2

Answer 2

4 : 65 is equal to 7 : 344

Given :

The ratio 4 : 65

To find :

4 : 65 is equal to which ratio

1) 5 : 124

2) 7 : 50

3) 3 : 82

4) 7 : 344

Solution :

Step 1 of 2 :

Find the pattern

Here the given ratio is 4 : 65

Now ,

4 : 65

= 4 : (64 + 1)

= 4 : (4³ + 1)

Thus the pattern is as below :

For a number n we have n : (n³ + 1)

Step 2 of 2 :

Choose the correct option

1) 5 : 124

For n = 5

5 : (5³ + 1) = 5 : (125 + 1) = 5 : 126 ≠ 5 : 124

So option (1) is not correct

2) 7 : 50

For n = 7

7 : (7³ + 1) = 7 : (343 + 1) = 7 : 344 ≠ 7 : 50

So option (2) is not correct

3) 3 : 82

For n = 3

3 : (3³ + 1) = 3 : (27 + 1) = 3 : 28 ≠ 3 : 82

So option (3) is not correct

4) 7 : 344

For n = 7

7 : (7³ + 1) = 7 : (343 + 1) = 7 : 344

So option (4) is correct

Hence the correct option is 4) 7 : 344

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