Question

Find 40%of a number if
15%of number is300.


please tell the answer correct​

Answer 1

Answer:

• 40% of a number is 800.

Step-by-step explanation:

Given that:

• 15% of a number is 300.

To Find:

• 40% of a number.

Let us assume:

• A number be x.

First finding the number:

According to the question.

⟶ 15% of x = 300

⟶ (15 × x)/100 = 300

⟶ 15x = 300 × 100

⟶ x = 30000/15

⟶ x = 2000

∴ A number = 2000

Finding the 40% of a number:

40% of a number

= 40% of 2000

= (40 × 2000)/100

= 800

∴ 40% of a number = 800

Answer 2

Answer:

• If 15 % of a number is 300, then 40 % of a number is 800.

Step-by-step explanation:

Given

• 15 % of a number is 300.

To find

• 40 % of a number.

Solution

15 % of a number is 300

Let the number be x

• ¹⁵⁄₁₀₀ × x = 300
• ³⁄₂₀ × x = 300
• x = 300 × ²⁰⁄₃
• x = 2000

∴ The number (x) is 2000.

Now, 40 % of a number (x)

• ⁴⁰⁄₁₀₀ × 2000
• ⅖ × 2000
• 800

∴ 40 % of a number is 800.