Question
PSLE
Min had two ribbons of the same length. She cut the first ribbon into equal parts of length 50 cm and to each part she tied 3 white balls. After that, she cut the second ribbon into equal parts of length 70 cm and to each part she tied 5 brown balls. When she finished tying, she counted that there were 12 more brown balls than white balls. How many balls were there altogether?
5 m

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PSLE
Min had two ribbons of the same length. She cut the first ribbon into equal parts of length 50 cm and to each part she tied 3 white balls. After that, she cut the second ribbon into equal parts of length 70 cm and to each part she tied 5 brown balls. When she finished tying, she counted that there were 12 more brown balls than white balls. How many balls were there altogether?