3bags and 4 pens cost ₹257 4bags and 3pens cost 324 find the total cost of 1bag and 10 pens
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I don't know OK dude.........
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3b+4p=257 x3. Equation 1
4b+3p=324 x4. Equation 2
9b+12p=771. Equation 3
16b+12p=1296 Equation 4
equation 4 - equation 3
7b = 525
b = 525/7 = 75
B=75
Put b =75 in equation 3
675 + 12P=771
12p= 120
P=12
Cost of 1 bag is 75
Cost of 10 pen is 120
Total cost = 195
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