Asked by shalu

MALU EARNS rs5 MORE IN A WEEK THAN IN PRECEEDING WEEK.HE EARNED rs135 IN FIRST WEEK.HOW MUCH WILL HE EARN AT THE END OF 39th WEEK??
Answered by Steve
135 + 38*5
Answered by shalu
nooo

8970 is the answer...but i dont know how???
Answered by Steve
oops. My answer was the amount earned in the 39th week. To find how much he has earned during the whole 39 weeks, use the sum formula:

S39 = 39/2 (2*135 + 38*5) = 8970
Answered by shalu
thank u
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