alicampos
alicampos
19-02-2018
Mathematics
contestada
What’s the total of marbles in the box?
Respuesta :
Аноним
Аноним
19-02-2018
140 marbels are in the box
Answer Link
roy21
roy21
19-02-2018
Answer: 140
Step 1: make a proportion
15%/21= 100%/x
Step 2: cross multiply
0.15X=21
Step 3: solve for X
21/0.15=X= 140
Answer Link
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