the first three terms of an arithmetic progression is (x + 1), (4 x - 2) and 6 x - 3 if the last term is 18 find the value of x
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128
This question requires us to solve an infinite GP
As we can see the first unit is 16 wide, then 8, then 4 and so on; this can be written as
∞
(64 used as 16*4 = 64 is the area of the first rectangle)
We have ∞
where a is the first term and r is the common ratio of the GP for summing an infinite GP.
here we have
Therefore
∞
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First you must change 60 into a fraction by putting it over 1
×
=
Then you divide the numerator(top) by the denominator(bottom) to get the answer
300÷6=50
Your answer is 50
Then you divide the numerator(top) by the denominator(bottom) to get the answer
300÷6=50
Your answer is 50
7000 more than 5500 by 7000-5500=1500
So the percent more=×100
=%