A: 1696117

Subject: {Math}

Level: {P6}

Tags: {Internal transfer, total same}

Source: {}

^^^

Box A: 200 red, 90 whitebelnanna wrote:

Can someone please help. Thanks in advance

Box B: 80 red, 100 white

Total: 280 red, 190 white

After transfer,

Box B: 3u red, 2u white

Box A: (280 - 3u) red, (190 - 2u) white

280 - 3u = 190 - 2u

3u - 2u = 280 - 190

1u = 90

Box A after transfer:

Red: 280 - 3u = 10

White: 190 - 2u = 10

Number of marbles transferred out of A -> 290 - 20 = 270