Rao is x years old now and Pau is 12 years older than Rao. In two years Pau will be exactly twice as old as Rao is then. How old is Rao today?

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

The anwser cause i do not understand just plez

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?