Jamil traveled 210 miles, which is 70% of the total distance to his grandfathers house. how many more miles does he need to to reach his grandfathers house?

He needs to travel 90 more miles to reach his grandfathers house

Step-by-step explanation:

The distance already covered can be expressed as a percentage of the total distance as shown;

t=p×T

where;

t=distance traveled by Jamil

p=percentage of total distance already traveled

T=total distance to grandfathers house

In our case;

t=210 miles

p=70%

T=unknown

replacing;

210=(70/100)×T

T=210×100/70

T=3×100=300

T=300

The total distance to grandfathers house=300

Remainder=Total distance-distance already covered

where;

Total distance=300 miles

distance already covered=210 miles

replaced;

Remaining distance=300-210=90 miles

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500