with the result being 64.12, what you would want to do is reduce the fraction 12/100. The reduced fraction would be 3/25. With the answer choices you want to look for any answer that is above 3 and also a multiple of 3. Only 45 satisfies this criteria.

thanks...but am still nt gettin it....can u further elaborate?i understood till the reduced fraction part...not after that...

swapna wrote:thanks...but am still nt gettin it....can u further elaborate?

Sure

The remainder has to be smaller than the divisor. The remainder is the non integer part of the answer. So in the number 64.12. The remainder is the .12

to find what the actual remainder could be, you would need to first make the .12 into a fraction. To make it into a fraction you would would simply put the number over 100 or 12/100. You reduce this and you get 3/25. Since this is the fraction we know that the lowest the remainder could be is 3. However, since we don't know the value of the divisor there is no upper limit on the remainder. Therefore, all we know is that the remainder will be a multiple of 3. The remainder could be 3, 6, 9, 12, 15, etc. Without knowledge of the divisor, all we know is that the remainder is a multiple of 3. When you see a question like this, approach it like I outlined and you will be fine.