WORD PROBLEMS

Question

QUESTION 1: The half life of uranium 230 is 20.8 days. A half life is described as the amount that half of a substance decomposes at a certain time interval. How much of an initial amount of 1000 grams of uranium 230 will be left after 208 days?

QUESTION 2: Each year, a manufacturing plant increased its production by 10 percent of the amount it produced the preceeding year. If it produced 500,000 units the first year, how many units did it produce the fourth year?

Answer 1

QUESTION 1: Given

A half life period of uranium 230 is 20.8 days 

half life period means 50% of the substance  decomposes at a certain time interval

half life period of uranium 230 is  20.8 days

given time period is 208 days

i.e 10 times of half time period (since 208=10*20.8)