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primary 6 | Maths
| Percentage
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Date Posted: 4 years ago
Views: 446
at first
X: 4u
after X adds 80c
X: 4u+0.80
80% = 4u+0.80
100% = 5u+1.00
after
X: 4u+0.80
S: 5u + 1
after S adds 70c
S: 5u+1 + 0.70 = 5u+1.70
5u + 1.7 = 1.5 x 4u
u = 1.7
at first,
X has $6.80 &
S has $9.50
...
X: 4u
after X adds 80c
X: 4u+0.80
80% = 4u+0.80
100% = 5u+1.00
after
X: 4u+0.80
S: 5u + 1
after S adds 70c
S: 5u+1 + 0.70 = 5u+1.70
5u + 1.7 = 1.5 x 4u
u = 1.7
at first,
X has $6.80 &
S has $9.50
...
See 1 Answer
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