Question

A man ate 100 grapes in 5 days. Each day he ate 6 more grapes than those he ate on the previous day. How many grapes did he eat the first day​

Answer 1

Step-by-step explanation:

Given Sn=100,d=6,n=5

Sn=n/2(2a+(n-1) d)

100=5/2(2a+(5-1) 6)

40=2a+24

16=2a

a=8

So, the man are 8 grapes on the first day.

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