Sum of 70% of first number, 45% of second number and 30% of third number is 1020 more than the square of 30. Second number is twice of first number. Difference between second number and first number is also the square of 30. What is the value of 40% of 63% of 5/7th of third number?

Sum of 70% of first number, 45% of second number and 30% of third numb

1.	Sum of 70% of first number, 45% of second number and 30% of third number is 1020 more than the square of 30. Second number is twice of first number. Difference between second number and first number is also the square of 30. What is the value of 40% of 63% of 5/7th of third number?
A.	268
B.	288
C.	482
D.	472
Answer» C. 482