Question

assume that you went to vegetables shop and purchase the following items.
2 kg beans 40/kg
1 kg tomato 40/kg
3kg potatoes 35/kg
500g green chillies 80/kg
Prepare the bill .If you have 500/ find how much money they will return?​

Answer 1

Answer:

Step-by-step explanation:

The costs per kg are:

Tomato Rs. 1

Potato Rs. 5

Chilli Rs. 0.25

Over all, we need a cost of Rs. 1 per kg.

Looking at these numbers, we should first notice that the quantity of tomatoes doesn't change the average price as their cost is exactly same as the desired cost.

The weighted average cost of Potatoes and Chillies should be equal to 1 rupee.

{math}\frac{5p+0.25c}{p+c}=1{\math}

From this we get [math] \frac{p}{c}=\frac{3}{16}[\math]

One obvious solution is to take 3 kg of potato (15 rupees), 16 kg of chilli (4 rupees) and 1 kg of tomato.

Faster way

Compared to the desired average(1 ₹), the cost of potato is 4 rupees higher and cost of chilli is 0.75 lower. They are in the ratio 4:0.75= 16:3.

The way to bring them upto average is by taking them in the ratio 3:16.

I HOPE IT HELPS you and mark as brainlist

This METHOD will use

Answer 2

Answer:

Money spent =80(beans)+40(tomato)+105(potato)+40(chilies)

=265

money retum=500-265

=235