[amiya]

hey iam sorry for the late reply
why arent we going with the usual method like q16 in analytical techniques . A company has started production of a new product and has found that the first 10 units of production took 120 hours. The next 30 units produced took a further 150 hours

similar to this q shldnt we have done 135=4x80r^2
135/(4×80)=r^2
=0.421875^2=64.95%

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