A snail can move a distance of 0.39 meters in 3 hours. What distance can it travel in ten hours? ( A ) 1.31 m ( B ) 1.3 m ( C ) 1.14 m ( D ) 1.28 m
Answers
Answer:
Opt.B) 1.3 m
Step-by-step explanation:
Given:
Snail can move a distance of 0.39 meters in 3 hours.
To find: Distance travelled by it, in 10 hours.
Thus,
Distance covered by snail in 1 hour = 0.39/3
= 0.13 metres
Hence, Distance travelled by it in 10 hrs = 0.13 m × 10
= 1.3 metres
Therefore, It can travel 1.3 metres in 10 hours.
Hence, Opt. B) 1.3 metres.
Answer:
(B) 1.3 m
Step-by-step explanation:
It is stated that,
Distance covered by the snail = 0.39 m
Time taken by the snail to cover the distance = 3 hours
It can be solved by unitary method as well as in proportional method.
In unitary method:
Hence, in 3 hours the snail covers a distance of 0.39 m
∴ In 1 hour the snail covers a distance of (0.39/3)
= 0.13 m
∴ In 10 hours the snail covers a distance of (0.13 × 10) m
= 1.3 m
Hence, the snail can travel 1.3 m in 10 hours.
∴ As per the question, option (B) 1.3 m is the correct answer.
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In proportional method:
Let, the distance travel by the snail in 10 hours be, 'y' m.
In 3 hours it can cover a distance of 0.39 m.
Seems it is in direct proportion, as the time gets increased as well as the distance also gets increased.
Hence,
0.39/3 = y/10
⇒ y/10 = 0.39/3
⇒ y = 0.13×10
⇒ y = 1.3 m
Hence, the distance can be covered by the snail is 1.3 m.