Question

it takes 1/2 minute to cook one dosa . how many dosa can be1/4 houra?​

Answer 1

Answer:

30 dosas

Step-by-step explanation:

1/4 hours = 15 minutes

By unitary method,

No. of dosas in 15 minutes = 15*2 = 30

Answer 2

Solution:
Let the dosa that can be cooked in 1/4 hours be a.
1/4 hours= 1/4 x 60 minutes = 15 minutes
Time Dosa
1/2 1
15 a

Now,
1/2 x a = 15 x 1
or, a = 15/(1/2)
or, a = 15/0.5
Therefore, a=30

Hence, 30 dosa can be cooked in 1/4 hours.