JNU SSS 2018 Question 33: Quantitative aptitude and data reasoning

$A$, $B$ and $C$ are three commodities. A packet containing 5 pieces of $A$, 3 of $B$ and 7 of $C$ costs ₹ 42. A packet containing 2, 1 and 3 of $A$, $B$ and $C$ respectively, costs ₹ 17. The cost of a packet containing 16, 9 and 23 items of $A$, $B$ and $C$ respectively, is