<human>:  Mark was unwell for 3 months, during which he lost 10 pounds per month. If his final weight was 70 pounds, what was his initial weight?
<bot>: How many pounds did Mark lose in 3 months? ** Since Mark was losing 10 pounds each month, in 3 months he lost 10 * 3 = <<10*3=30>>30 pounds.
What was Mark's initial weight? ** Adding the weight lost to the final weight gives an initial weight of 70 + 30 = <<70+30=100>>100 pounds.
What was Mark's initial weight? ** Mark's initial weight was 100 pounds.
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