Two types of widgets, namely type A and type B, are produced on a m

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Practice Data Sufficiency –

Two types of widgets, namely type A and type B, are produced on a machine. The number of machine hours available per week is 80. How many widgets of type A must be produced?

A. One unit of type A widget requires 2 machine hours and one unit of type B widget requires 4 machine hours.

B. The widget dealer wants supply of at least 10 units of type A widget per week and he would not accept less than 15 units of type B widget.

Ten boys go to a neighbouring orchard. Each boy steals a few mangoe

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Practice Data Sufficiency –

Ten boys go to a neighbouring orchard. Each boy steals a few mangoes. What is the total number of mangoes they steal?
I. The first boy steals 4 mangoes and the fourth boy steals 16 mangoes and the eight boy 32 mangoes and the tenth boy steals 40 mangoes.
II. The first boy stole the minimum number of mangoes and the tenth boy stole the maximum number of mangoes.

Five students Atul, Bala, Chetan, Dev and Ernesto were the only one

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Practice Data Sufficiency –

Five students Atul, Bala, Chetan, Dev and Ernesto were the only ones who participated in a quiz contest. They were ranked based on their scores in the contest. Dev got a higher rank as compared to Ernesto, while Bala got a higher rank as compared to Chetan. Chetan’s rank was lower than the median. Who among the five got the highest rank?  

A. Atul was the last rank holder.

B. Bala was not among the top two rank holders.    

ABC Corporation is required to maintain at least 400 Kilolitres of

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Practice Data Sufficiency –

ABC Corporation is required to maintain at least 400 Kilolitres of water at all times in its factory, in order to meet safety and regulatory requirements. ABC is considering the suitability of a spherical tank with uniform wall thickness for the purpose. The outer diameter of the tank is 10 meters. 

Is the tank capacity adequate to meet ABC’s requirements?    

A. The inner diameter of the tank is at least 8 meters . 

B. The tank weighs 30,000 kg when empty, and is made of a material with density of 3 gm/cc. 

The average weight of a class of 100 students is 45 kg. The class c

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Practice Data Sufficiency –

The average weight of a class of 100 students is 45 kg. The class consists of two sections, I and II, each with 50 students. The average weight, WI, of Section I is smaller than the average weight, WII, of Section II. If the heaviest student, say Deepak, of Section II is moved to Section I, and the lightest student, say Poonam, of Section I is moved to Section II, then the average weights of the two sections are switched, i.e., the average weight of Section I becomes WII and that of Section II becomes WI.

What is the weight of Poonam?

A. WII– WI = 1.0

B. Moving Deepak from Section II to I (without any move from I to II) makes the average weights of the two sections equal.