There is a pile of six boxes. The weight of the topmost box i.e., 6th box is one fifth of the second box, the weight of the fourth box is \(33\frac{1}{3}\)% more than the weight of the first box, whose weight is thrice that of fifth box’s weight. Also, weight of second box is 2.5 times the fifth box. The third box whose weight is 720 gm is 60% heavier than the fifth box. What is the average weight of the three lightest boxes?

465
440
545
530
625

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 1 : 465

Boxes	1	2	3	4	5	6
Weight (in gm)	3 × 450 = 1350	450 × 2.5 = 1125	720	(1350 × 100)/75 = 1800	(720 × 100)/160 = 450	1/5 × 1125 = 225

∴ Required Average = (720 + 450 + 225)/3 = 1395/3 = 465

4 views Answered 2022-09-04 04:29

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