At the supermarket, a bottle of shower foam had a mass of 1.4 kg while a bottle of shampoo had a mass of 1.6 kg. miko bought supplies for half a year and they had a mass of 10.4 kg. she purchased one more bottle of shower foam than shampoo. how many bottles of shower foam did she buy? ​

Miko bought 4 shower foams

Step-by-step explanation:

If Miko bought 1 more shower foam, then:

10.4 kg - 1.4 kg = 9 kg

To find the number of items he bought:

1.4 kg + 1.6 kg = 3 kg

9 kg ÷ 3 kg = 3

If he bought 1 more shower foam:

3 + 1 = 4

To check:

4 × 1.4 kg = 5.6 kg

3 × 1.6 kg = 4.8 kg

5.6 kg + 4.8 kg = 10.4 kg

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