Question

The National Association for Women in Science asked recent high school grads if they had taken certain science classes. Of those surveyed, 23 said they had taken physics, 47 said they had taken chemistry and 5 said they had taken both. Seven said they had taken neither. How many recent high school grads were surveyed?

Answer 1

23 + 47 + 7 - 10 = 72

Answer 2

thanks that what i came up with is 72