Question

Please help me solve this

Answer 1

Answer:

The Howard family used water 15 hours long; The Allen family used water 40 hours long;

Step-by-step explanation:

The Howard family used water for "h" hours ;

The Allen family used water for "a" hours ;

a + h = 55 ⇒ h = 55 - a

35a + 15h = 1625

35a + 15(55 - a) = 1625

20a = 1625 - 825

20a = 800

a = 40 hours

h = 15 hours

The Howard family used water 15 hours long;

The Allen family used water 40 hours long;