The income of a company increase 20% per annum. If its income is Rs. 15,30000 in the year 2002, then its income in the year 2000 was:
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Step-by-step explanation:
Let the income in 2010 be P
⇒R = 20%
⇒Income of year 2012 = Rs.26,64,000
⇒Income of 2012 = P[1+R100]2
⇒2664000 = P[1+201002]
⇒2664000 = P×65×65
⇒Income in 2010 = 1850000
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Answer:
The heart's electrical system
SA node (sinoatrial node) – known as the heart's natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract
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