faircloughl17 faircloughl17

02-08-2021
Mathematics

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on this necklace the ratio of black beads to white beads is 1:4 How many more black beads do you need to add to make the ratio of black to white 4:1 ?

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Аноним Аноним

02-08-2021

Answer = 15 black beads

1:4 = 1 black bead and 4 white beads
4:1 = 16:4
16 - 1 = 15 black beads

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