Answer:
5 times
Step-by-step explanation:
Assume the height of the streetlamp to be x
If you make a diagram from the details given by the question you should find two pairs of similar sides, from which you can form the equation
Solving this gives the height of the streetlamp as 30 feet. Divide this length by the height of the man to get the number of times the streetlamp is taller.
Answer:
19
Step-by-step explanation:
1447-3=1444, 1444/76=19
Hope that helps!
S+D+K=155
K=S+10
D=S-20
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S+(S-20)+(S+10)=155
S+S-20+S+10=155
3S-10=155
3S=165
S=165/3=55
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If S=55,
K=55+10=65
D=55-20=35
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Therefore, Sarah had worked for 55 hours, Kate had worked for 65 hours and Dave had worked for 35 hours.