Question

an isotope is 4.5 x 10^9 years old. after a certain amount of time , it is now 1. 8 x 10^10 years old . In fraction form , what amount remained ? in other words , how much of 4.5 * 10^9 is 1.8 x 10^10 ?

Answer 1

\(\LARGE \color{purple}{\rightarrow {4500000000 \over 18000000000} }\)

Do it now?

Answer 2

@princesskks did you understand?

Answer 3

It's represented in scientific notation in the question.

Answer 4

@ash2326 yes i do thanks @ParthKohli i got 0.25 . is that right ?

Answer 5

Yes, you cancel out and get 45/180 = 1/4 = 0.25

Answer 6

thanks !! @ParthKohli