Question

when the price of papaya decrease by 30%, a person could buy 3 more in rs 210. then find the original and new price of papaya​

Answer 1

Answer:

The original price of papaya per kg is Rs. 30.

The new price of papaya per kg is Rs. 21.

Step-by-step explanation:

Let the original price of the rice be Rs. x / kg

After 30% of reduction, the new price of the rice is Rs. (70/100)x / kg

Now from the question we can write,

{Price / (new price per kg)} - {Price / (original price per kg)} = 3

{210/(70/100)x} – {210/x} = 3

Or, (21000/70x) – (210/x) = 3

Or, (21000 – 14700) / 70x = 3

Or, 6300 / 70x = 3

Or, x = 6300 / (70 * 3)

Or, x = Rs. 30/kg  

∴ New price = 70x / 100 = (70 * 30) / 100 = Rs. 21/kg

Answer 2

$\huge\textbf{Answer:-}$

• 30 rupees is the original price of 1 kg (for fruit papaya).

• Now 21 rupees is the new price of papaya for 1 kg.

• Let x be the OP.

If 30% is reduced then the new amount will be rupees ...................

$( \frac{70}{100} x / \: kilogram)$

$= \frac{price}{New \: price \: per \: kg} ( - )\frac{price}{(original \: price \: for \: 1 \: kg} = \: (3)$

= 210/70/100x – 210/x = 3

=> 21000/70x – 210/x = 3

=> 21000 – 14700 / 70x = 3

$=> 6300 / 70x = 3$

$=> x = 6300 / (70 ° 3)$

$=> x = Rs. 30/kg$

$=> 70x / 100 = (70 ° 30) / 100$

$=> Rs. 21$

Hence, New price is rupees 21,for the papaya.