Is this Math or what | ITMW #1| ALL ON EQUATIONS

Algebra Level 2

I took 140 Rs to the super market :). But spent all money while coming out :( .

i bought 3 items : Biscuit, Juice & milk .

Biscuit costs 90 rs more than juice and | biscuit and juice together cost 120 rs more than milk .

what is the least number we can get by adding cost of any 2 items?


The answer is 30.

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2 solutions

Abhishek Chopra
Nov 14, 2014

B=90+J B+J=M+120 B+M+J=140 90+2J=M+120 2J-30=M 90+J+2J-30+J=140 J=20 B=110 M=10 LEAST VALUE OF 2 ITEMS=30 Q.E.D.

Siddharth Mahajan
Nov 13, 2014

B=90+j
M=2 j-30.
J=j

j+90+j+2j-30 = 140.
j=20, B=110, M=10

J+m=30

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