Question

Prerna decided to donate 30% of her monthly income to an orphanage. But on the day of donation, she changed her mind and donated ` 4200, which is 70% of what she had decided earlier. What should be the actual donation as per her earlier decision?

Answer 1

Answer:

20000

Step-by-step explanation:

let her monthly income be x.

therefore 30%of x=30/100x or 3/10x

then = 3/10x×70/100=4200

=210/1000x=4200

therefore x=4200×1000/210

=20000