Question

A hostel spends ₹3200 as cost of. Rice for 20 students for 30 days. If they spend ₹2400 for 30 students for how many days will the rice last

Answer 1

Answer:

Rs 3200 for 20 students in 30 days .

so cost of rice for 1 student = 3200/20X30=16/3

Which implies

2400 = 16/3X20X x

x =15 days

hope it helps : }

Step-by-step explanation:

Answer 2

students =X
days =y
20x+30y =3200...(1)
30x+ y = 2400 ....(2)
multiply both eq(1)and (2) with 30 and 20
600x+900y = 96000
600x+20y = 48000
Subtract both equation
880y = 48000
y= 48000/880
y =54days ..


Hope this answer will help you ..