Practice

Practise until it sticks

Choose a topic, a skill or a difficulty. Calculation exercises have new versions with fresh numbers once you have solved them, so you can practise the method rather than memorise an answer.

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Application, difficulty 2 of 3

Mobile wallet share

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In the transactions dataset, the payment method is missing for some baskets. Among the transactions whose payment method was recorded, what percentage were paid by mobile_wallet? Give the percentage to 2 decimal places.

Data: transactions · Open in the lab to explore and calculate.