4/1 = 2/x...4 miles to 1 hr = 2 miles to x hrs cross multiply because this is a proportion (4)(x) = (1)(2) 4x = 2 x = 2/4 reduces to 1/2...so she can walk 2 miles in 1/2 hr (or 30 minutes)
Is john 16? Since samantha is 48 and she is 2 times older than me, that means im 24 (48/2) and since 3 times older than john that means 48/3= 16. John is 16
