Question

if the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weight 2/1/2 kilograms

Answer 1

weight of 12 sheets = 40 g
weight of 1 sheet = 40 /12=3.33g
weight of 21/2 sheets = 21/2×3.33=34.975......agar aisa kuch bhi question aata hai na toh Pehle Ek cheez yaad rakhna Ek cheez ka find out karo Aur phir usse multiply karo the given no.
Hope it helps u .....

Answer 2

Solution:

Given Question:

The weight of 12 sheets of thick paper is 40 grams.

Find:

How many sheets of the same paper would weigh 2½ kilograms.

Given:

Number of sheets = 12 , x

Weight of sheets = 40 , 1500 (in grams).

Note:

Their would be more the weight if there are more the number of sheets. hence, the sheets and the weight are directly proportional to each other.

Calculations:

→ 12/40 = x/2500

or → 12 × 2500/400 = x

or → 750 = x

Therefore, 750 would be the required number of sheets of paper.

Alternate method:

Two quantities (x) and (y) they differ from direct proportion (x = Ky) or (x/y = k).

k = number of sheets/weight of sheets of in grams:

→ ( 12/40 = 3/10 ).

→ x = 2½ kg = (2500 g).

→ x = ky , x = 3/10 × 2500 = 7500.

Therefore, 750 sheets of paper would weight 2½ kg.