Multiple Choice Questions On Software Engineering - Set 3

[ Hint for questions 7 - 10 : In a particular program it is found that 1% of code accounts for 50% of execution time. To code a program in FORTRAN, it takes 100 man-day. Coding in assembly language is 10 times harder that FORTRAN but runs 5 times faster. Converting an FORTRAN program to assembly language is 4 times harder. ]1)  Software engineering aims at developing ? Reliable SoftwareCost