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?
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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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