John claimed he had a garden twice as large as Al's retangular-shaped garden that measured 15 ft by 30 ft. When they visited John's rectangular-shaped garden, they found it measured 18 ft. by 50 ft. Al claimed that it could not be twice as large since neither the length nor the width were twice as large. Who was correct and why?

15 * 30 = 450 sq. ft.

18 * 50 = ____ sq. ft.

so 900 squ ft.

Yep.

so johns is twice as large Al was wrong.

You're right. :-)

Why?

johns is twice as large as al's

The question asks WHY you're correct.