Jewellery-maker
A jewellery-maker threads 5 beads in 20 seconds. A necklace consists of 210 beads, 30 are already threaded.
a) Write an equation of the dependence of the number of threaded beads on time (in minutes), during which the jewellery-maker will be threading the beads.
b) In what time will the jewellery-maker finish the entire necklace?
c) In what time will the jewellery-maker thread 30 necklaces if she would not have a single bead threaded?
Write as an equation and express the time in hours.
Your answer:
a) Write an equation of the dependence of the number of threaded beads on time (in minutes), during which the jewellery-maker will be threading the beads.
b) In what time will the jewellery-maker finish the entire necklace?
c) In what time will the jewellery-maker thread 30 necklaces if she would not have a single bead threaded?
Write as an equation and express the time in hours.
Your answer:
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