Question

2) a box of 150 packets consists of 1kg packets and 2kg packets. Total weight of the box is 264kg. How many 2kg packets are there?

Answer 1

Let the no of 1 kg packets = x

⇒ The no. of 2 Kg packets = (150 - x)

Weight of 1 Kg Packets = Weight of One packet × No. of packets

⇒ Weight of 1 Kg Packets = 1 × x = x

Weight of 2 Kg Packets = Weight of One packet × No. of packets

⇒ Weight of 2 Kg Packets = 2 × (150 - x) = (300 - 2x)

Sum of Weights of 2 kg packets & 1 Kg Packets = 300 - 2x + x = (300 - x)

According to Question,

300 - x = 264

⇒ x = 300 - 264 = 36

No of 1 kg packets = 36

No. of 2 kg packets = 150 - 36 = 114