5. Two marks exercise problems IV

1. During a drought, the water level in a dam fell $3$ inches per week for $6$ consecutive weeks. What was the change in the water level in the dam at the end of this period?

 

Change in the water level $=$ decreaseincrease  inches

 

 

2. Budda was born in $563$ BC (BCE) and died in $483$ BC (BCE). Was he alive in $500$ BC (BCE)? and find his life time. (Source: Compton's Encylopedia)