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# Question

# Answer

Owlinker

Chandra took out half of the balls and put another 4 balls

At the end, there are 20 balls left in the box

20 – 4 = 16 (before Chandra put another 4 balls in)

16 x 2 = 32 (before Chandra took out half of the balls)

Meaning 32 balls are inside the box **after** Ali took out 1/5 of the balls and put another 8 balls:

32 – 8 = 24 (before Ali put another 8 balls in)

As Ali took out 1/5 of the balls, means there are 4/5 left.

4 units –> 24 balls

1 unit –> 6 balls

5 units –> 30 balls

Hope this answers the question.

Owlinker

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Khong Pek Mao

This is a fractional transfer question.

LCM (left)

4/5 × 1/2 = 4/10

After | Transfer | before | Transfer | Before | |

4u | – 4 | 8u – 8 | -8 | 10u – 20 | |

1/2 = 4/8 |
4/5 = 8/10 4/5 = 16/20 |

4u = 20

1u = 5

10u = 10 × 5 = 50

50 – 20 = 30

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