19. A weaver takes 2 days to weave 3 shawls. How many days will be take to weave 15 shows?
20. 8 mechanics can assemble 4 TV sets in 2 days. How many mechanics will assemble 3 TV sets 2
days?
Answer the following questions in detail
Answers
Step-by-step explanation:
persons weave 336 shawls in 14 days
Which means 336÷3=112
3 persons weave 112 shawls in 14 days
So, 112÷14 =8
Which means 1 person weaves 8 shawls in 1 day
So, as 1 person weave 8 shawls in 1 day
Then, 8 person will weave 8×8=64 shawls in 1 day and then for 5 days which means
64×5=320
Ans: 8 person will weave 320 shawls in 5 days.
19. A weaver takes 2 days to weave 3 shawls.
We have to find the number of days taken to weave 15 shawls by weaver.
∵ The weaver takes 2 days to weave 3 shawls.
∴ The weaver takes 2/3 days to weave 1 shawls.
∴ He takes (2/3) × 15 = 10 days to wave 15 shawls.
Therefore the weaver takes 15 days to wave 15 shawls.
20. 8 mechanics can assemble 4 TV sets in 2 days.
We have to find the number of mechanics required to assemble 3 TV sets in 2 days.
∵ 8 mechanics can assemble 4 TV sets in 2 days.
∴ 8/4 = 2 mechanics can assemble 1 TV sets in 2 days.
∴ 3 × 2 = 6 mechanics can assemble 3 TV sets in 2 days.
Therefore six mechanics required to assemble 3 TV sets in 2 days.
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