Question

Mei Ling has 200 coins. 25% of these coins are $1 coins. She wants to increase the number of $1 coins to 40%. How many $1 coins must she collect?​

Answer 1

Go ask your teacher their your best cheat sheet

Answer 2

256 of 200 = 25/100 x 200

= 50 $1 coins

408 of 200 = 40/100 x 200

= 80 $1 coins

80-50 = 30 $1 coins

Mei Ling must collect 30 more $1 coins