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A. 20 years
B. 30 years
C. 40 years
D. 50 years
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I belive it is 3:45 hrmins
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1121221
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43.69
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The Bear was white in color as it was a polar bear
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125, 106, 88, 76, 65, 58, 53
125, 106, 88, 76, 65, 58, 53
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Speed = 13+4 km/hr
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644, 328, 164, 84, 44, 24, 14
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C. 164
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D
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1 tank will fill in 10 minutes.
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Hard work would mean spending long hours to complete my work without any shortcuts. It definitely ensures results but the process is long and stressful. Smart work would be aiming for the same results but with planning and prioritization of tasks.
Let x be fathers present age and y be son present age.
5 yrs ago, the age of father and son be x-5 & y-5.
Then,
x-5+y-5=40
x+y-10=40
x+y=50
y=50-x ———–> (1)
ratio between father and son in present age
x:y=4:1
x/y=4/1
x=4y
Apply eq (1) ,
x=4(50-x)
x=200-4x
x+4x=200
5x=200
x=200/5
x=40,,
=> The present age of father is 40.