Mathematics
Mathematics, 01.06.2021 15:50, cxttiemsp021

19. Mr Ong bought a total of 156 pens and pencils. The ratio of the number of pens to the number of pencils he bought was 4:9. Each pen cost $2. How
much did Mr Ong pay for the pens?​

answer
Answers: 3

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19. Mr Ong bought a total of 156 pens and pencils. The ratio of the number of pens to the number of...

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