Question

If 3kg of rice cost 120 then what is the cost of 7 kg

Answer 1

we divide 120÷3=40

so, 1kg rice= 40 rupees

we multiply 40×7=280

280 is answer

Answer 2

Answer:

Hence the cost of 7 kg is Rs.280

Step-by-step explanation:

As per the details proved in the above question,

It is given that cost of 3kg of rice is Rs.120

We have to find the cost of 7 kg rice,

We have to know the cost of 1 kg,

Cost of 1 kg rice is equal to cost of 3kg rice upon 3 we get,

$=\frac{120}{3} \\=Rs.40$

The cost of 1 kg of rice is Rs.40

The cost of 7 kg of rice is as bellow,

$=7\times 40$

Multiply 7 into 4 we get 32 then adding zero we get 280,

Also, 7 into 40 we get, 280

$=Rs.280$

Hence the cost of 7 kg is Rs.280

Note:-If 3kg of rice cost Rs.120 then what is the cost of 7 kg