Is 1.5/7.5 a rational number

A rational number is a number that can be written as a simple fraction (as a ratio) and an irrational number is a number that cannot be written as a simple fraction (irrational means not rational) Example: 1.5 is rational because it can be written as 3/2. 7.5 is rational because it can be written as 15/2, so in my mind, yes it is rational because both top and bottom are rational. Hope this helped!! :):) 

40 & 50 in the right corner are the complementary angles as when placed in a sum (added together) they make 90°