Question

Julie had 2730 cards and Kim had 3570 cards at first.

Julie gave some of her cards to Kim. In the end, Kim had thrice as many cards as Julie.

How many cards did Julie give Kim.​

Answer 1

1155 cards

Explanation:

3(2730-x)=3570+x

8190 - 3x = 3570 + x

4620 - 3x = x

4620 = 4x

1155 = x

Answer 2

1155

Explanation:

Total number of cards is 2730+3570=6300

Since Kim now has 3 times the card of Julie so Julie must have 6300/4=1575.

So, Julie gave 2730-1575=1155