Question

45. A person usually spent Rs. 48 to buy
groundnuts for roasting and resale. On one
occasion he could buy 1.5 kg of groundnuts
less for Rs. 48 as the price has gone up by 25%.
What was the earlier price of groundnut per kg?
(a) Rs. 8
(b) Rs. 6.40
(c) Rs. 7.20 (d) None of these​

Answer 1

suppose, the price of 1 kg groundnut is rs X. And, the person bought y kg in 48 rs.

So, X × y=48

After the increased price,

The price of ground nut per kg= 1.25 X rs/kg

And, he bought (y-1.5) kg

So, 1.25X × (y-1.5)= 48

after solving both equations

we get, X= earlier price of groundnut/kg = 6.40 rs

Answer 2

Answer:

Step-by-step explanation:

25%===1/4

4-----5

5------4

1---1.5

5----7.5

48/7.5===6.40 Rs