Question

if 9/10 of a number is 81 find the number​

Answer 1

Answer:

$\huge\mathbb\green{SOLUTION→}$

$\frac{9}{10}x = 81$

$x = \frac{81 \times 10}{9}$

$x = 9 \times 10$

$x = 90$

Answer 2

Answer:

Let the number be x, so that

x × 9/10 = 81

or, x = 81 × 10/9 = 9 × 10 = 90

So, that number is 90.

To Check:-

90 × 9/10 = 81

or, 9 × 9 = 81

or, 81 = 81

LHS = RHS

Hence, Verified.

hope it helps

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