hey, i was trying to solve this problem and i can't although it seems stupid ...can someone help ???


The radioactive element polonium has a half life of 140 days, which means that because of radioactive decay, the amount of polonium remaining after 140 days is one-half of the original amount. Starting with 10 grams of polonium today, determine how much is left after 250 days?




i now that i to find an equation relating the amount left to the initial amount, half-life time and time passed)