A student saves Rs5 in first week Rs10 in second week Rs 15 in third week and so on from the money given by his parent for his expenditure if he continue like the way how much money he save in 15 week
Answers
Answered by
3
Answer:
75 rs
Step-by-step explanation:
5.....in 1st week
10... In 2nd week
As so on......
So... 5 , 10 , 15 , .........
n=15.....we have to know about the exp. In 15 th week
a=5 ... d=t1-t2.. =10 - 5= 5......so.... d= 5
Tn = a + (n - 1) d
T15= 5 +(15 - 1) 5
= 5 + 14 ×5
=5 +70
=75
So in 15 th week the expenditure is 75 rs.
Answered by
2
Answer:
75 rupees in 15 weeks
Step-by-step explanation:
1 week in 5 rupees save him
15 week*5rupees =75 rupees
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