Question
PSLE
Zoe had two strings of the same length. She cut the first string into equal parts of length 35 cm and to each part she tied 4 grey balloons. After that, she cut the second string into equal parts of length 40 cm and to each part she tied 5 pink balloons. When she finished tying, she counted that there were 15 more pink balloons than grey balloons. How many balloons were there altogether?
5 m

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PSLE
Zoe had two strings of the same length. She cut the first string into equal parts of length 35 cm and to each part she tied 4 grey balloons. After that, she cut the second string into equal parts of length 40 cm and to each part she tied 5 pink balloons. When she finished tying, she counted that there were 15 more pink balloons than grey balloons. How many balloons were there altogether?