Question

For a group of 32 students, a certain amount of food lasts for 45 days. For how many days will the same food last for 72 students

Answer 1

Question:For a group of 32 students a certain amount of food lasts for 45 days.for how many days will the same food last for 72 days.

Answer:

20 days

Given:

for 32 students food lasts for 45 days

To find:

How many days will the same food last for 72 students

Solution:-

Let the last day be x

32 students=45 days

72 students=x

32×45=72×x

32×45/72=x

20=x

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for 20 days will the same food last for 72 students

Answer 2

• For a group of 32 students, certain amount of food lasts for 45 days.

_____________ [ GIVEN ]

• We have to find the number of days for which the same food lasts for 72 students.

_____________________________

Let number of days be M.

_____________ [ ASSUME ]

For 32 students amount of food = 45 days.

And for 72 students same amount of food = (M) days.

According to question,

=> 32 × 45 = 72 × M

=> 1440 = 72M

=> 1440/72 = M

=> 20 = M

=> M = 20 days

_______________________________

For 20 days the same amount of food lasts for 72 students.

_______________ [ ANSWER ]

_______________________________

☆ VERIFICATION:

From above calculations we have M = 20

Put value of M in this: 32 × 45 = 72 × M

=> 32 × 45 = 72 × 20

=> 1440 = 1440

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