Syntel Company Numerical Ability Averages

There are five boxes in a cargo hold. The weight of the first box is 200 kg and theweight of the second box is 20% higher than the weight of the third box, whose weight is 25% higher than the first box’s weight. The fourth box at 350 kg is 30% lighter than the fifth box. Find the difference in the average weight of the four heaviest boxes and the four lightest boxes.
1. 80 kg
2. 75 kg
3. 37.5 kg
4. 116.8 kg

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Syntel Other Question

Find the average weight of four containers, if it is known that the weight of the first container is 100 kg and the total of the second, third and fourth containers’ weight is defined by f(x) = x2 – 3/4 (x2), where x = 100.
1. 650 kg
2. 880 kg
3. 760 kg
4. 460 kg
In a class of 52 students the number of boys is two less than the number of girls. Average weight of the boys is 42 kg, while the average weight of all the 52 students is 40 kg. What is the approx. average weight of the girls.
1. 38 kg
2. 39 kg
3. 40 kg
4. 42 kg