Question

If 15% of 30% of 50% of a number is 90, then what is the number?

Answer 1

Answer:

Number required here is 4000.

Step-by-step explanation:

Let the required number be a.

According to the given question, 15% of 30% of 50% of a is 90.

Now, solving the question step by step : -

= > 50% of a

= > 50 / 100 x a

= > 1 / 2 x a

= > a / 2

= > 30% of 50% of a

= > 30% of a / 2

= > 30 / 100 x a / 2

= > 3 / 10 x a / 2

= > 3a / 20

= > 15% of 30% of 50% of a

= > 15% of 3a / 20

= > 15 / 100 x 3a / 20

= > 3 / 20 x 3a / 20

= > 9a / 400

According to the question  : -

= > 15% of 30% of 50% of a is 90

= > 9a / 400 = 90                  [ from above, putting value ]

= > a =  400 / 9 x 90

= > a = 400 x 10

= > a = 4000

Hence the number required here is 4000.

Answer 2

hope this answer help you ☺️