A baker filled with a measuring cup with 2/5 cup water. He poured 1/2 of the water into the batter, and then spilled 1/8 of the water on the floor. How much water will the baker needed to add what is left in the cup to have 50% more than what he started with? Choose one:
A) 1/8 cup
B) 3/8 cup
C) 21/40 cup
D) 1/2 cup
E) 7/8 cup
2/5 is the original water in cup .half in batter.So left is 1/5 out which 1/8 is spilled out.So again left with 3/40.   so 50% more than what he started was =2/5+1/2*(2/5)=3/5   Amount of water needed to add = 3/5 - 3/40=21/40   21/40 cup
<result>C</result>
A baker filled with a measuring cup with 2/5 cup water. He poured 1/2 of the water into the batter, and then spilled 1/8 of the water on the floor. How much water will the baker needed to add what is left in the cup to have 50% more than what he started with?