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21.02.2021 •
Mathematics
Find shaded region of given figure
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Ответ:
doted is shaded region.
Ответ:
In a box 1/4 of the beads are red, 3/5 of the remainder are yellow, and the rest are blue. If there are 48 blue beads, how many beads are there altogether?
In a box 1/4 of the beads are red, 3/5 of the remainder are yellow, and the rest are blue. If there are 48 blue beads, how many beads are there altogether?
Fractions
Jan 21 | Ka from Beverly Hills, CA
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Andrew M. | Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
0
t = r + y + 48
r = t/4
y = (3/5)(t - r)
= (3/5)(t - t/4)
= (3/5)(3t/4)
= 9t/20
t = t/4 + 9t/20 + 48
Multiply through by 20 to clear fractions
20t = 5t + 9t + 960
6t = 960
t = 160 beads in total
check:
r = t/4 = 40 red beads
y = 9t/20 = 72 yellow beads
b = 48 blue beads
40 + 72 + 48 = 160 beads
same theory use it here
thanx
hey