Can anyone help me with this question pls? Thank you in advance.

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primary 5 Maths Singapore

Can anyone help me with this question pls? Thank you in advance.

Date Posted: 4 years ago

Snell

4 years ago

after
b: 4u
f: 1u

at first
b: 4u - 390
f: 1u + 375

4u - 390 = 1u + 375 +135
1u = 300

at first, 1485

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Date Posted: 4 years ago