Question
PSLE
Gem had two ribbons of the same length. She cut the first ribbon into equal parts of length 45 cm and to each part she tied 2 purple balls. After that, she cut the second ribbon into equal parts of length 50 cm and to each part she tied 3 brown balls. When she finished tying, she counted that there were 21 more brown balls than purple balls. How many balls were there altogether?
5 m

Click button first when a symbol is required. X

PSLE
Gem had two ribbons of the same length. She cut the first ribbon into equal parts of length 45 cm and to each part she tied 2 purple balls. After that, she cut the second ribbon into equal parts of length 50 cm and to each part she tied 3 brown balls. When she finished tying, she counted that there were 21 more brown balls than purple balls. How many balls were there altogether?