Question

if price of cooking oil increase by 30% lisa intends to spend only an additional 15% on it. in order to do so,by how much will she have to reduce the quantity of oil purchased

Answer 1

Answer:

11.54%(2dp)

Step-by-step explanation:

e.g. oil costs £1

=

+30%=£1.30

+15=£1.15

115/130x100= 88.46%(2dp)

100%-88.46%=11.54%(2dp)

Answer 2

Concept Introduction: Profit and Loss are a part of day to day life and business.

Given:

We have been Given: Cost Price of Oil increased by

$30\%$

Lisa can spend upto,

$15\%$

To Find:

We have to Find: How much she have to reduce the quantity of Oil Purchased?

Solution:

According to the problem, Let Cost Price of oil be

$rs.100$

therefore increase in CP of Oil is

$100 + 30\% \times 100 = 130$

Lisa can spend,

$100 + 15\% \times 100 = 115$

therefore the percentage to reduce the quantity of oil is,

$100 - \frac{115}{130} \times 100 = 100 - 0.88 \times 100 = 100 - 88 = 12\%$

Final Answer: The percentage to reduce in oil usage is,

$12\%$

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