Question

A housing society constructed 197 houses. If the cost of construction for each house is Rs 450000, what is the total cost for all the houses?

Answer 1

Cost of construction of 1 house = Rs 450000
Cost of construction of 197 such houses = 197 × 450000
= 450000 × (200 − 3)
= 450000 × 200 − 450000 × 3 [Using distributive property of multiplication over subtraction]
= 90000000 − 1350000
= 88650000

∴ The total cost of construction of 197 houses is Rs 8,86,50,000.