For every 7 blue chips there are 3 red chips. In a pile of 320 blue and red chips, there are ___ more blue chips than red chips.

7/10 of the chips are blue

3/10 of the chips are red

the difference is (7/10-3/10)320

To determine the number of blue chips and red chips in the pile, we can set up a ratio using the information given. Since for every 7 blue chips there are 3 red chips, the ratio of blue chips to red chips is 7:3.

To find the number of blue chips, we need to divide the total number of chips by the sum of the parts of the ratio, which is 7 + 3 = 10.

320 divided by 10 gives us 32. So, there are 32 sets of 7 blue chips and 3 red chips, resulting in 32 x 7 = 224 blue chips and 32 x 3 = 96 red chips.

To find the difference between the number of blue chips and red chips, we subtract the number of red chips from the number of blue chips: 224 - 96 = 128.

Therefore, there are 128 more blue chips than red chips in the pile.