Mary picks 3 shells for every 7 shells that Bong picks. If she and Bong picked 30
shells altogether, how many shells did Bong pick?
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Mary picks 3 shells for every 7 shells that Bong picks. If she and Bong picked 30
shells altogether, how many shells did Bong pick?
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Answer:
21 shells
How?
Since Mary picks 3 shells and Bong picks 7 shells and 3+7 is equal to 10
Where 10×3=30
So 7×3 is 21 and 3×3 is 9
Bong picked 21 shells while mary picked 9 shells
To check 21+9 is 30
I hope this helps
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