Question

4/5 kg of fish and 2 kg of squid cost Rs.52.
1/4 kg of fish and 1 kg of squid cost Rs.23.Find the cost of 3 kg of squid.A) 20B) 36C) 54D) 60

Answer 1

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Answer 2

Let the price of 1kg of fish be x rupees
and 1kg of squid be yrupees

Then, A/q
4/5x +2y=52. -eq i
1/4x +y =23 - eq ii

now
4x +10y =260. -eq iii
again
x+4y=92 -eq iv
multiplying eq Iv with 4
then
4x+16y=368-eq-v

now subtracting eq iii from v
4x+16y=368
4x+10y=260
__________
6y=108
y=108/6
=18 rupees
so' the cost 3 kg of squid =>3*18=54rupees
so option C is correct.