Let's break down the prompt to help simplify things. First it mentions that we are going to have a variable . Then it says it "is the same as," which means that it is equal to "the quotient of p and 140." So, we now know that g is equal to the quotient of and 140. Remember that quotients can be represented as fractions, with the dividend on top and the divisor in the denominator.
150 because if it is going 420 in 14 hours you divide 420 by 14 which gives you 30 and then you multiply 30 x 5 and you get 150 so the bird goes 150 miles in 5 hours