20000 BLOOD DONORS WERE REGISTERED WITH 'RED CROSS' IN HYDERABAD. THE NUMBER OF DONORS INCREASED AT RATE OF 10% EVERY YEAR .FIND THE TIME PERIOD AT THE END OF WHICH THE TOTAL NUMBER OF BLOOD DONORS BECOME 24200.
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Answer:
2 years
Step-by-step explanation:
Original Value = 20000
New Value = 24200
Rate of increase = 10%
Let us say that the number of years = x
So,
20000(1 + 10/100)^x = 24200
(11/10)^x = 1.21
1.1^x = 1.1^2
x = 2