Question

The average weight of a basketball is 21 1/8 ounces. The average weight of a baseball is 5 2/8 ounces. How many more ounces does the basketball weigh?

Answer 1

`15(7)/(8) \ ounces`

Explanation:

The questions tests for subtraction of fractions.

Start by converting the two fractions into improper numbers:

`21(1)/(8)=(169)/(8)\\5(2)/(8)=(42)/(8)`

Subtract the baseball weight from the basketball weight to obtain the additional weight in the latter.

More weight=>

`(169)/(8)-(42)/(8)\\=(127)/(8)\\=15(7)/(8)`

Answer 2

`15(7)/(8)\ ounces`

Explanation:

step 1

Convert mixed number to an improper fraction

`21(1)/(8)\ ounces=21+(1)/(8)=(169)/(8)\ ounces`

`5(2)/(8)\ ounces=5+(2)/(8)=(42)/(8)\ ounces`

step 2

To find out how many more ounces does the basketball weigh, subtract the weight of a baseball from the weight f a basketball

so

`(169)/(8)\ ounces-(42)/(8)\ ounces=(127)/(8)\ ounces`

Convert to mixed number

`(127)/(8)\ ounces=(120)/(8)+(7)/(8)=15(7)/(8)\ ounces`