Add thirty-eight and nine tenths, five and fifty-eight hundredths, seven, and fifteen and eight tenths.
38 9/10 + 5 58/100 + 7 + 15
3890/100 + 558/100 + 7 + 15
4448/100 + 7 + 15
44 48/100 + 7 + 15
44 24/50 + 7 + 15
44 12/25 + 7 + 15
66 12/25
where is the fifteen and eight-tenths?
To add these numbers, you can start by converting any mixed numbers into improper fractions.
38 9/10 can be written as an improper fraction by multiplying the whole number (38) by the denominator (10) and adding the numerator (9). This gives us 389/10.
Similarly, 5 58/100 can be written as an improper fraction by multiplying the whole number (5) by the denominator (100) and adding the numerator (58). This gives us 558/100.
Now, let's add the fractions. Since the denominators are the same for both fractions (10 and 100), we can simply add the numerators together and keep the denominator the same.
389/10 + 558/100 = (389 * 10)/(10 * 10) + 558/100 = 3890/100 + 558/100 = 4448/100.
Next, we add the whole numbers and the remaining numbers:
4448/100 + 7 + 15 = 4448/100 + 700/100 + 1500/100 = (4448 + 700 + 1500)/100 = 6648/100.
Finally, we can simplify the fraction by dividing both the numerator and denominator by their greatest common divisor, which in this case is 4.
6648/100 = 3312/50.
Therefore, the final sum is 66 12/25.