Question

Sally is going shopping with her friend Susan at the mall which is located 10 kilometers away from her house she drives half way to the mall and then realizes she forgot her purse at home she turns around and goes back home to get it and drives directly from her house to the mall what is the total distance that dally traveled ?

Answer 1

in the beginning she drive half the distance means 5km
then returned back means she returned this 5 km back
then 5+5=10
then she went to the mall that is 10 km
so 10+10=20km

Answer 2

the total distance that dally traveled is 20 km

Step-by-step explanation:

given information:

the distance of sally's house and the mall is 10 km

she drives half a way to the mall and the goes back to the house to pick up the purse. So,

the distance of half way to the mall = 1/2 x 10 km = 5 km

the distance of half way to the house = half way to the mall = 5 km

the total distance from half way to the mall and return to the house (a)

a = 5 km + 5 km = 10 km

then, she drive directly to the mall, the distance (b), b = 10 km

the total distance that dally traveled (x)

x = a + b

= 10 km + 10 km

= 20 km