MATH 109 Lecture : patterns
13 Jun 2018
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ARITHMETIC SEQUENCES WORD PROBLEM
If john has 40 oranges and he eats 2 oranges per day
when will the oranges of John finish
let the day the oranges finish be x
2 oranges: 1 day
4 oranges :2 days
6 oranges : 3 days
This is a linear sequence
2,4.6,....,40
the constant difference is 2
Tn=a+(n-1)d
Tn=2+(n-1)2
Tn=2+2n-2
Tn=2n
Tn=40 oranges
40=2n
divide both sides by 2
then n=40/2
n=20 days
Therefore the oranges of John will last for 20 days provided he eats 2 oranges per day
As a learner/student you must make sure that you know how to use mathematics in real
life.
Mathematics is fun when you know how to apply it in real life
Mathematics is all around us.
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Document Summary
If john has 40 oranges and he eats 2 oranges per day when will the oranges of john finish let the day the oranges finish be x. 40=2n divide both sides by 2 then n=40/2 n=20 days. Therefore the oranges of john will last for 20 days provided he eats 2 oranges per day. As a learner/student you must make sure that you know how to use mathematics in real life. Mathematics is fun when you know how to apply it in real life.
