Question

Please save me from this Grade 10 maths word problem. I am stuck!!

Karabo is training by running for the Comrades marathon, he starts his training by running 40km per week. Each week he increases the distance covered by 10km.

1. Write down the formula to calculate the distance he runs in the n-th week. (4 marks)
2. Use the formula to calculate the distance he runs in the 12th week of training (1 mark)

Answer 1

1. 40 + (n-1)10 2. = 40 + (12-1)10 = 150km