Jamal gave 1u to Lily, so she has 7u left. This means Jamal has 8u at first.
Lily has same amount as Jamal after receiving 1u. This means that Lily has 7u in the end. It also means she has 6u at first.
Jamal at first: 8u
Lily at first: 6u
Total unit at first: 8u+7u=15u
15u -> $420
1u -> $420 divide 15
Then find Jamal at first (8u)
Good luck with PSLE:)
4 years ago
winterr
Asked 4 years ago
SG
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Secondary 1
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Number and Algebra