# Choose the correct option from the given alternatives: The decay rate of a certain substances is directly proportional to the amount present at that instant. - Mathematics and Statistics

MCQ

Choose the correct option from the given alternatives:

The decay rate of certain substances is directly proportional to the amount present at that instant. Initially there are 27 grams of substance and 3 hours later it is found that 8 grams left. The amount left after one more hour is

#### Options

• 5 2/3 grams

• 5 1/3 grams

• 5.1 grams

• 5 grams

#### Solution

5 1/3 grams

Concept: Application of Differential Equations
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#### APPEARS IN

Balbharati Mathematics and Statistics 2 (Arts and Science) 12th Standard HSC Maharashtra State Board
Chapter 6 Differential Equations
Miscellaneous exercise 1 | Q 1.14 | Page 216