Question

a 100 kg mixture of two different types of nuts costa $550. if type A costs $4 per kg and type B costs $7 per kg, how many of each type were used?

Answer 1

Answer:

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Answer 2

Given : a 100 kg mixture of two different types of nuts costa $550.

type A costs $4 per kg and type B costs $7 per kg

To Find : how many of each type were used?

Solution:

Let say Type A  =  x  kg

Then Type B = 100 - x  kg

Cost of Type A = 4x  Rs

Cost of Type B = 7(100 - x)   Rs

Total Cost = 4x + 7(100 - x)  

= 4x + 700 - 7x

= 700 - 3x

700 - 3x = 550

=> 3x = 150

=> x = 50

100 - x = 50

Each type used = 50 kg

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