Suppose you want to combine the fractions 13/210 and 29/770. What's the LCD?
Factor both 210 and 770: 3*7*10 and 7*11*10. Form the LCD using the common factors 7 and 10 and the unique factors 3 and 11. The LCD is thus 3(7)(10)(11), or 2310.
Then 13/210 and 29/770 become 143/2310 and 87/2310. We can add these because their denominators are the same.
So the desired LCD is 2310.
Both numbers can be divided by 4...
7/10
Once again, 1200 would be the correct anwser
Answer:
500 + (100 x 5) = 1000
Step-by-step explanation:
Lets say Priscillas's family total drove P miles.
and Clifton's family drove C miles
now Clifton drove half as far as Priscilla drove.
so C=P/2 this is the expression
If Priscilla drove total 135+40= 175miles
And Clifton drove C=175/2=87.5miles