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Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the 7th day?
Detailed Solution
Reference: NCERT Class XI, page 170. For arithmetic growth, $L_t=L_0+rt$ with $L_0=20$ cm, r = 30 cm/day and t = 7 days: $L_t=20+30\times7=230$ cm.