Help with this maths question plz
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Help with this maths question plz

[From: ] [author: ] [Date: 11-10-18] [Hit: ]
payed £61450 into a savings scheme.Over the same 40 years, Brain also pays into a savings scheme. In the first year he pays in £890 and his payments then increase by £d each year.Given that Brain and Anne will pay in exactly the same amount over the 40 years,find the value of d.......
Anne, over 40 years,payed £61450 into a savings scheme.

Over the same 40 years, Brain also pays into a savings scheme. In the first year he pays in £890 and his payments then increase by £d each year.

Given that Brain and Anne will pay in exactly the same amount over the 40 years,

find the value of d.

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61450 - 890 divided by 39 years = 1552
1552 take 809 to find out the increase from the first payment = 662

d = 662

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61450=(40/2)*(2*890+(40-1)*d)
from here find the value of d

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1678686776
1
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