Question

if 3gram of a sweet cost rs 1 then how much 1.5kg cost

Answer 1

3 grams of a sweet costs Rs.1

Therefore, Cost of 1.5 Kg , or, 1500 grams of the sweet = Rs. 1*(1500 divided by 3) = Rs. 1*500 = Rs. 500

Ans) Rs. 500

Note:  * symbol denotes multiply sign.

Answer 2

Answer:

Step-by-step explanation:

We can approach this in 2 ways.

coverting 3 gram to kg OR

converting 1.5kg into gram.

then using unitary method.

Method 1:

By coverting kg to gram

1.5kg = ( 1.5 x 1000 ) gm = 1500 gm

Since 1 kg = 1000 gm

3 gm  costs of sweet = Rs. 1

3000 gm would cost = Rs. (1 x 1000) = Rs. 1000

Since 1500 gm is half of 3000 gm so the cost for the sweet will be half as well.

i.e, Rs. 1000/2 = Rs. 500

Method 2:

By converting gram to kg.

Since,

1 kg = 1000 gm

1 gm = 1/1000 kg

3 gm = 3/1000 kg

3/1000 kg costs = Rs. 1

1 kg would cost = Rs (1 x 1000) / 3

1.5 kg would cost = Rs. 1.5 times [(1 x 1000) / 3]

                             = 1.5 x 1000/3 = 500 Rs.