One millisecond is 0.001 of a second. The costs for a single run of a program are $1.07 for operating-system overhead, $0.023 per millisecond of computer time, and $4.35 for the mounting of a data tape. What is the total of these three costs for 1 run of a program that requires 1.5 seconds of computer time?
A. $7.15
B. $8.87
C. $28.96
D. $35.57
E. $39.92

• Well I'll explain in detail but let me tell u the short cut.
  Since 1.5 sec= 1500 millisecond and it will be multiplies by 0.023$=34.5$
  this is quick calculation so u can easily eliminate answers A,B.C and adding 4.35 and 1.07 will be 5.42 so D can be eliminated too. Then Answer is E.
  And for detailed 34.5+5.42=39.92.
  Hope its clear?
• 7 years agoHelpfull: Yes(0) No(0)