Rob is on vacation in Paris, France. When Rob visited the Eiffel Tower today, he climbed 1,000 stairs in 25 minutes. Tomorrow, Rob will climb 280 stairs at Montmartre. If he climbs at the same rate, how many minutes will it take Rob to climb the stairs tomorrow?
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Answer:
7 minutes
Step-by-step explanation:
Today
Steps : minutes = 1000 : 25
If he climbs at the same rate, how many minutes will it take Rob to climb the stairs tomorrow
Let x = number of minutes it will it take Rob to climb the stairs tomorrow
Tomorrow
Steps : minutes = 280 : x
Equate both ratios
1000 : 25 = 280 : x
1000 / 25 = 280 / x
Cross product
1000*x = 25 * 280
1000x = 7000
Divide both sides by 1000
x = 7,000 / 1,000
= 7
x = 7 minutes
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