Find the lowest common multiple of 3 and 5, that is 15
the lights will blink together every 15 seconds
in 1 minute blink together = 4 times
that is at 15, 30, 45 and 60
Anil scored 30 runs in the first innings of a test match. His score changed by +30 runs in the second innings. What was his scor
1 answer:
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Answer: There will be 0.04 grams will be left in the sample after 20 years.
Step-by-step explanation:
Since we have given that
Here, Initial amount of radioactive substance = 400 grams
We need to find the amount of substance that will be left in the sample after 20 years.
So, t = 20 years
So, it becomes,
Hence, there will be 0.04 grams will be left in the sample after 20 years.