The mixed number 17 78/40 written as an improper fraction is 758/40
To turn the mixed number 17 78/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 17 × 40 = 680.
After that, add the result to the numerator of the fractional part: 680 + 78 = 758.
Next, Write the sum of the previous step on the original denominator: 758/40.
This means that 17 78/40, as an improper fraction, equals 758/40.
See also: 17 78/40 as a decimal