Basket weaving

Uncle Rudolf weaves baskets, which he then sells in the market. On Monday, he knitted 7 baskets; he worked one more every other day than the previous day. How many times more baskets did he knit by the following Monday dinner, compared to the first day, if he did not work on Sunday?

Final Answer:

n =  10

Step-by-step explanation:

$$\begin{gathered} a_1=7 \\ {a}_2=a_1+1=7+1=8 \\ {a}_3=a_2+1=8+1=9 \\ {a}_4=a_3+1=9+1=10 \\ {a}_5=a_4+1=10+1=11 \\ {a}_6=a_5+1=11+1=12 \\ {a}_7=0 \\ {a}_8=a_6+1=12+1=13 \\ s=a_1+a_2+a_3+a_4+a_5+a_6+a_7+a_8=7+8+9+10+11+12+0+13=70 \\ n=s/a_1=70/7=10 \end{gathered}$$

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