**1 3/5**

or

**1 7/10**

**15/9**

**= 1.666666667**

**==================So, the mixed number can vary according to round off. **

**1 3/5**

or

**1 7/10**

**15/9**

**= 1.666666667**

**==================So, the mixed number can vary according to round off. **

Assuming you are working in the same base 10 number system as I am, 15/9 =** 1 and 2/3, **

If you check your work with a calculator, 2/3 = 0.6666666666666667.

If you compare 1 and 3/5 to 1 and 2/3, you will see the problem.

9 goes into 15 once - 9/9 =1

this then leaves 6 of the original 15 - 6/9

so this is 1 and 6/9

or, to simplify divide by the highest common factor (which is 3), giving

1 and 2/3

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