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SITUATION : There are 125 passengers in the first carriageL:150 passengers in the second carriage and 175 passengersin the third crriage and so on an third carriage and soon in an arithmetic sequence.izo words onwords on the of: What's the tatal number of passengers in the firest7 carriages?Solution: The sequence is 125, 150, 175...briken:oo briven :-ar=125, a 2 = 150, a3 = 175S7=?an=125+ [h-1] 25 a7= 125 +1-1) 285We can use the formula:= 1400 Carriage 1st 2nd 3rdfirst ? carriageNumbres of Passengers 125 150 175 -2nd 3rd ... 7thл |
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Answer» hurtj hdegj wwtuk☹ |
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