Mathematics, 04.07.2019 03:30 itsdria

The ratio of red to blue counters in a bag is 1: 4.2 red counters are added, now the ratio of red to blue is 1: 2.how many counters were in the bag originally. i have the answer (which is 10) i just need an explanation

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The ratio of red to blue counters in a bag is 1: 4.2 red counters are added, now the ratio of red to...