NIMCET 2018 Logical Reasoning PYQ — A caterpillar crawls up a pole of 75 inches high, starting from t… | Mathem Solvex | Mathem Solvex
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NIMCET 2018 — Logical Reasoning PYQ
NIMCET | Logical Reasoning | 2018
A caterpillar crawls up a pole of 75 inches high, starting from the ground. Each day, it crawls up 5 inches and each night it slides down 4 inches. When will it reach the top of the pole?
Choose the correct answer:
A.
End of 70 days
B.
End of 71 days
(Correct Answer)
C.
End of 72 days
D.
End of 73 days
Correct Answer:
End of 71 days
Explanation
Correct Option - 2 A caterpillar crawls up a pole 75 inches high, starting from the ground. Each day it crawls up 5 inches and each night it slides down 4 inches. Calculation: ⇒ distance crawl up by caterpillar in day = 5 inches ⇒ distance crawl by caterpillar slides in night = -4 inches [- sign shows distance crawls when sliding] ⇒ distance crawled by caterpillar in 1st day i.e. (day + night) = (5 - 4) = 1 inch ⇒ distance crawled by caterpillar in 70th day = 70 inches ⇒ distance crawled by caterpillar in 71st day during day time = (70 + 5) = 75 inches
∴ It will first reach the top of the pole on the 71st day
Explanation
Correct Option - 2 A caterpillar crawls up a pole 75 inches high, starting from the ground. Each day it crawls up 5 inches and each night it slides down 4 inches. Calculation: ⇒ distance crawl up by caterpillar in day = 5 inches ⇒ distance crawl by caterpillar slides in night = -4 inches [- sign shows distance crawls when sliding] ⇒ distance crawled by caterpillar in 1st day i.e. (day + night) = (5 - 4) = 1 inch ⇒ distance crawled by caterpillar in 70th day = 70 inches ⇒ distance crawled by caterpillar in 71st day during day time = (70 + 5) = 75 inches
∴ It will first reach the top of the pole on the 71st day
