Question
PSLE
Natalie had two streamers of the same length. She cut the first streamer into equal parts of length 60 cm and to each part she tied 3 black balls. After that, she cut the second streamer into equal parts of length 70 cm and to each part she tied 4 purple balls. When she finished tying, she counted that there were 9 more purple balls than black balls. How many balls were there altogether?
5 m

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PSLE
Natalie had two streamers of the same length. She cut the first streamer into equal parts of length 60 cm and to each part she tied 3 black balls. After that, she cut the second streamer into equal parts of length 70 cm and to each part she tied 4 purple balls. When she finished tying, she counted that there were 9 more purple balls than black balls. How many balls were there altogether?