Question

There are a total of 63 bikes If the ratio of blue bikes to Black bikes is 4 to 5 how many of the bikes are blue

Thank you​

Answer 1

28 blue bikes

Explanation:

There follows a relatively simple method for solving this problem:

Let c be a counter. Then 4c + 5c = 63, and 9c = 63. Thus, c = 7.

Then the number of blue bikes is 4(7) = 28, and the number of black ones is 5(7) = 35. Note that 28 + 35 comes to 63.

There are 28 blue bikes.