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Rahul chaudhary

· started a discussion

· 1 Months ago

question approach (Question:181972.0)

can you even suggest more complex method or approach .i don't think it a one of ggod approach .try to figure out more simpler ways please

Question:
With the increase in the price of sugar by 45%, a consumer can buy 9 kg less sugar for Rs. 1740. What is the increased price per kg of sugar?
Options:
A) Rs. 80
B) Rs. 87
C) Rs. 72
D) Rs. 60
Solution:
Ans. (b) Let the initial price of sugar = Rs. x/kg

Price after increase = Rs. 1.45 x/kg

Initial quantity = \(\cfrac{1740}{x}\).

Quantity after increases the price = \(\cfrac{1740}{1.45x}\).

Now, \(\cfrac{1740}{1.45x}\) = \(\cfrac{1740}{x}\) – 9

\(\cfrac{1740}{x}\) –\(\cfrac{1740}{1.45x}\) = 9

x = 60

Required price = 1.45 × 60 = Rs. 87/kg

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