Find the number if $1%$1% of the number is $20$20.
Find the number if $2%$2% of the number is $8$8.
Find the number if $10%$10% of the number is $5$5.
Find the number if $20%$20% of the number is $10$10.
Slightly advanced problems involving applications on percentages, profit & loss, overhead expenses, Discount, tax.