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## Explanation

The three-tenth of an unknown number can be figure out as:

Let suppose the number is y.

Now, one-fourth of this number

y x 1/4

One-third of one-fourth of that number is 15

1/3(y x 1/4) = 15 ________ (i)

Value of y can be figure out easily from equation (i) by just simplifying it (y = 180).

Now, number is known to us (y = 180). Three-tenth of that number (180 x 3/10) will be 54 which is our required answer.

## To Find

Number = ?

## Solution

Let suppose

Number = y

According to the given condition

1/3(y x 1/4) = 15

y x 1/4 = 15 x 3

y x 1/4 = 45

y = 45 x 4

y = 180

According to the second condition

180 x 3/10 = 18 x 3 = 54

**Required Number = 54 answer**

## Conclusion

If one-third of one-fourth of that number is 15, then three tenth of that number is 54.