Question

Ramesh asks the labour to dig a well upto a depth of 10m. Labour charges Rs. 150 for first metre and Rs. 50 for each subsequent meters. As labour was uneducated, he claims Rs. 550 for the whole work. Was the labour correct?​

Answer 1

Step-by-step explanation:

Labour charges in ₹ for each subsequent metres are 150, 150+50, 150+2×50 ,150+3×50…... ₹ 150, ₹ 200, ₹ 250, ₹ 300…. Thus, amount of labour charges forms an AP. Hence, ₹ 600 should be paid to the labour