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22 lines
646 B
QBasic
22 lines
646 B
QBasic
4 PRINT "TIME - SPEED - DISTANCE EXERCISE"\PRINT
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5 RANDOMIZE
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10 C=INT(RND(1)*25)+40
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15 D=INT(RND(1)*15)+5
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20 T=INT(RND(1)*19)+20
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25 PRINT " A CAR TRAVELING"C"MPH CAN MAKE A CERTAIN TRIP IN"
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30 PRINT D"HOURS LESS THAN A TRAIN TRAVELING AT"T"MPH."
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35 PRINT "HOW LONG DOES THE TRIP TAKE BY CAR";
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40 INPUT A
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45 V=D*T/(C-T)
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50 E=INT(ABS((V-A)*100/A)+.5)
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55 IF E>5 THEN 70
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60 PRINT "GOOD! ANSWER WITHIN"E"PERCENT."
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65 GOTO 80
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70 PRINT "SORRY. YOU WERE OFF BY"E"PERCENT."
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80 PRINT "CORRECT ANSWER IS"V"HOURS."
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90 PRINT
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95 PRINT "ANOTHER PROBLEM (YES OR NO)";
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100 INPUT A$\PRINT
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105 IF A$="YES" THEN 10
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999 END
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