If 2 kg of almonds cost as much as 8 kg of walnuts and the cost of5 kg of almonds and 16 kg of walnuts is Rs. 1080, the cost of almonds per kg is
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let the cost of almonds per kg be x
the cost of walnuts per kg be y
2x=8y eq. 1
5x+16y=1080 eq. 2
from eq 1
x=4y
substituting x in eq. 2
5x+8y=1080
5*4y+8y=1080
20y+8y=1080
28y=1080
y=1080/28
now
x=4y
=4*1080/28
=154.28
the cost of walnuts per kg be y
2x=8y eq. 1
5x+16y=1080 eq. 2
from eq 1
x=4y
substituting x in eq. 2
5x+8y=1080
5*4y+8y=1080
20y+8y=1080
28y=1080
y=1080/28
now
x=4y
=4*1080/28
=154.28
anushika2:
please recheck your answer
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