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Question
primary 6 | Maths
| Ratio
One Answer Below
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thanku
Date Posted: 4 years ago
Views: 257
at first
nos.
$2: 8u
$5: 4u
$10: 5u
value
$2: 8ux2 = 16u
$5: 4ux5 = 20u
$10: 5ux10 = 50u
total = 86u
after
nos.
$2: 5u
$5: 4u - 11
$10: 5u
value
$2: 5ux2 = 10u
$5: (4u-11)x5 = 20u - 55
$10: 5ux10 = 50u
total = 265
10u + 20u - 55 + 50u = 265
1u = 4
twenty $10 notes
.
.
.
nos.
$2: 8u
$5: 4u
$10: 5u
value
$2: 8ux2 = 16u
$5: 4ux5 = 20u
$10: 5ux10 = 50u
total = 86u
after
nos.
$2: 5u
$5: 4u - 11
$10: 5u
value
$2: 5ux2 = 10u
$5: (4u-11)x5 = 20u - 55
$10: 5ux10 = 50u
total = 265
10u + 20u - 55 + 50u = 265
1u = 4
twenty $10 notes
.
.
.
See 1 Answer
done
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clear
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According to the question 3/8 of the $2 notes and 11 $5 notes are taken out. But we will only remove 3/8 of the $2 notes, so that the remaining amount is $320 (add back the 11 $5 into the $265).
Date Posted:
4 years ago
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