Question

Brenda donated a sum of money which was twice as much as what Crystal donated. Brenda spent all her remaining money on 4 pens which cost $2. 20 for 2 pens. Brenda had $54. 90 at first. How much money did Crystal donate?

Answer 1

Answer:$25.25

Explanation:

Let's find out how much money Brenda donated.

With her REMAINING MONEY she bought 4 pens that cost $2.20 for 2 pens. So 4 pens would cost twice of 2.20 because 2 is half of 4.

That means that she spent $4.40 on pens.

Now, she had $54.90 to begin with, and after she donated her amount of money, she had 4.40 left. Subtract that for 54.90 and you get $50.50.

Since she donated twice as much as Crystal, that means Crystal donated 50.50/2 = $25.25