Question

What will be the total weight of 10 poles, each of the same weight ? I. One-fourth of the weight of each pole is 5 kg. Ii.The total weight of three poles is 20 kilograms more than the total weight of two poles. Select one: a. Either i or ii is sufficient b. I alone is sufficient while ii alone is not sufficient c. Ii alone is sufficient while i alone is not sufficient d. Both i and ii are sufficient e. Neither i nor ii is sufficient

Answer 1

hey mate!!!

the correct option is -

option d. both 1 and 2 are sufficient.

explanation:

let the weight of one pole be x kg

1. according to point no. 1,

5 kg= 1/4× x

5×4=x

20 kg= x

therefore, weight of one pole= 20kg.

now,

weight of 10 poles= 10×20=200 kg

2. according to point no 2,

total weight of 3 poles= total weight of 2 poles+ 20

therefore,

x+x+x= x+x+20

3x= 2x+ 20

3x-2x= 20

x= 20

therefore,

weight of 10 poles= 10× 20= 200 kg.

from this, we can conclude that both points are sufficient and using either of them we can find the answer to the question given.

hope this helps!!! by the way,

weight is a vector quantity and it's unit is newton( N)

whereas, mass is a scalar quantity and it's unit it kilograms ( kg)...so in the question, it should be mass instead of weight.

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