Question

Two fifth of one third of three seventh of a number is 15, what is the 40% of that number?​

Answer 1

Answer:

see this attachment hope it's helpful to you

Answer 2

Answer:

40 percent of the 1575 is 105 .

Step-by-step explanation:

As given

Two-fifth of one -third of three-seventh of number is 15.

Let us assume that the unknown number be x .

\frac{2}{5}\times \frac{1}{3}\times \frac{3}{7}\times x = 15

5

2

×

3

1

×

7

3

×x=15

Simplify the above

x = \frac{15\times 5\times 3\times 7}{2\times 1\times 3}x=

2×1×3

15×5×3×7

x = \frac{1575}{6}x=

6

1575

x = 262.5

Percentage formula

Percentage = \frac{Part\ value\times 100}{Total\ value}Percentage=

Total value

Part value×100

Percentage = 40%

Total value = 262.5

Put all the values in the formula

40= \frac{Part\ value\times 100}{262.5}40=

262.5

Part value×100

Part\ value = \frac{262.5\times 40}{100}Part value=

100

262.5×40

Part\ value = \frac{10500}{100}Part value=

100

10500

Part value = 105.

Therefore the 40 percent of the 1575 is 105 .

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