2. a magazine ad states that 4 out of 7 doctors
recommend flash toothpaste. if 1400 doctors were
surveyed, how many doctors recommended flash
toothpaste?

x = 800

Step-by-step explanation:

This is a ratio problem.

4 / 7 = x / 1400

Cross multiply to get 7x = 5600.

Now divide both sides by 7 in order to isolate x.

x equals 800

Hope this helps you :)

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.