Question

there are 28 plants in a garden, of which 2/7 have thorns in their stems. how many plants do not have thorns in their stems​

Answer 1

AnswEr :

• 28 plants in Garden
• 2 /7 have thorns in their stems.
• How many do not have thorns?

• Let's Head to the Question Now :

⇒ Have Thorns = Total × 2 /7

⇒ Have Thorns = 28 × 2 /7

⇒ Have Thorns = 4 × 2

⇒ Have Thorns = 8

• Plants without thorns in their stem :

⇒ Do Not Have Thorns = Total Plants – Have Thorns

⇒ Do Not Have Thorns = 28 - 8

⇒ Do Not Have Thorns = 20

∴ Plants without thorns in stems are 20.

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• Shortcut Trick :

⇒ Do Not Have Thorns = Total × (1 - 2/7)

⇒ Do Not Have Thorns = 28 × (7 - 2) /7

⇒ Do Not Have Thorns = 28 × 5 /7

⇒ Do Not Have Thorns = 4 × 5

⇒ Do Not Have Thorns = 20

∴ Plants without thorns in stems are 20.

Answer 2

Answer :-

Number of plants = 28

Number of plants with thorns = 2/7 × 28

= 8

Number of plants which do not have thorns = 28 - 8

= 20