Ice cream 4

Ice cream sales for a shop in the last 4 months have been 200, 250, 300, and 350. What are the expected sales in the 5th month?

Correct answer:

a5 =  400

Step-by-step explanation:

a1=200 d=250200=50 a2=a1+d=200+50=250 a3=a2+d=250+50=300 a4=a3+d=300+50=350 a5=a4+d=350+50=400



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