# Some are 1 kg weights and some are 2 kg weights. The sum of the weights is 260.What is the number of 1kg weights?

Ans : 40
This question is related to TCS Interview

• Jan 24th, 2007

There are a total of 150 weights. Let the number of 1 Kg weights be 'x'. Then the number of 2 Kg weights is '150 - x'. The sum of the weights is 260 Kg. ie [x * 1 + (150 - x) * 2] = 260. By solving this you will get 'x' as 40.

#### sultan

• Aug 18th, 2006

Question incomplete here. There are a total of 150 wts. The answer will be 40 numbers of 1kg wts.

#### latha

• Sep 16th, 2006

how did u get the ans

#### Suman

• Jan 24th, 2007

There are a total of 150 weights. Let the number of 1 Kg weights be 'x'. Then the number of 2 Kg weights is '150 - x'. The sum of the weights is 260 Kg. ie [x * 1 + (150 - x) * 2] = 260. By solving this you will get 'x' as 40.

#### Ankita Mishra Profile Answers by Ankita Mishra

• Jan 14th, 2010

Well this ans is absolutely fine...
but i just want to make a slight change
i.e.
There are a total of 150 weights.
Let the number of 1 Kg weights be 'x'. Then the number of 2 Kg weights is '150 - x'.
The sum of the weights is 260 Kg.
ie [x * 1 + (150 - x) * 2] = 260
x + 300 - 2x = 260
-x + 300 = 260
300 - 260 = x
40 = x

Hence the ans is 40.  