Anyone can help on question 13

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Primary 3 Maths Singapore

Anyone can help on question 13

Date Posted: 4 years ago

Snell

4 years ago

before,
R : J = 1 ; 1

after,
R : J = 1 ; 5

R = u
J = 5u

u+30 = 5u-30
u = 15

ans: (1)

Susan Ang

4 years ago

Thank you snell

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Date Posted: 4 years ago