4 kg of apple and 3kg of guava together cost rs 36.50 while 3kg of apple and 2kg of guava cost rs 26.50.what is the price per kg of apple and guava( by substitute method)
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Answer:
4.5 & 3.5
Step-by-step explanation:
let the per kg cost of Apple be X and per kg cost of guava be Y.
4X + 3Y = 36.5 => X = (36.5-3Y)/4
3X + 2Y = 26.5
=> 3((36.5-3Y)/4 + 2Y= 26.5
=> 109.5 -9Y +8Y = 26.5*4
=> 109.5 -Y = 106.0
=> Y = 3.5
X= 36.5-10.5/4 = 26/4 = 4.5
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