The ratio of the number of red beads to the number of blue beads in box A was 5: 9. There were thrice as many red beads as blue beads in Box B. Mother transferred 1/3 of the blue beads from Box A to box B. There were 385 beads left in Box A and the ratio of the number of red beads to the number of blue beads in Box B became 7: 4.
(A) What was the ratio of the number of red beads to the number of blue beads in Box A in the end?
(b) Find the total number of beads in Box B in the end.
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Question
Answer
Maths Hub
A(Red) : A(Blue)
5 units : 9 units (Before)
5 units : 6 units (After)
11 units = 385
1 unit = 35
3 units = 105 (Transfer to Box B)
Answer for (a): 5:6
B(Red) : B(Blue)
3 : 1
21 parts : 7 parts (Red is constant)
7 : 4
21 parts : 12 parts (Red is constant)
5 parts = 105
1 part = 21
33 parts = 693
Answer for (b) = 693