1) A man bought Television for Rs. 23.674 . fridge for Rs. 67.840 and a washing machine for Rs. 45.870. How much money did he spend in all 2
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Answer:
Mass is never lost or gained in chemical reactions. We say that mass is always conserved. In other words, the total mass of products at the end of the reaction is equal to the total mass of the reactants at the beginning. This is because no atoms are created or destroyed during chemical reactions.
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the man was very rich
S.P. of the T.V. and washing machine =2× Rs. 12500= Rs. 25000
C.P. of the T.V. = Rs. 12500 ×
130
100
C.P. of the washing machine = Rs. 12500×
70
100
∴ Total C.P. = Rs. 12500 (
130
100
+
70
100
)= Rs. 12500×
91
200
∴ Required loss %=
91
2500000
91
2500000
−25000
×100=
2500000
2500000−2275000
×100
=
2500000
225000
×100=9%
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