Every hour, and iceberg decreases by 40% due to the heat.

Question

Every hour, and iceberg decreases by 40% due to the heat. After three hours, the mass is then 216kg. Originally the iceberg must have been?

 

a. 360kg

b. 600kg

c. 1000kg

d. 1250kg

 

Answer 1

Assume the original weight is x

 

x(1-0.4)(1-0.4)(1-0.4) = 216kg

0.216x = 216kg

x = 1000kg