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Question
primary 6 | Maths
| Data Analysis
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Date Posted: 4 years ago
Views: 474
M:
avg: 24
no. of days: 1u + 5
total: (1u + 5) x 24 = 24u + 120
K:
avg: 30
no. of days: 1u + 1
total: (1u + 1) x 30 = 30u+30
30u + 30 = 24u + 120
1u = 15
15 days
.
.
.
avg: 24
no. of days: 1u + 5
total: (1u + 5) x 24 = 24u + 120
K:
avg: 30
no. of days: 1u + 1
total: (1u + 1) x 30 = 30u+30
30u + 30 = 24u + 120
1u = 15
15 days
.
.
.
The question seems ambiguous.
"...sewing her cushions 4 days earlier" would refer to 4 days earlier than Mrs Mok, or 4 days earlier than the given deadline.
"...sewing her cushions 4 days earlier" would refer to 4 days earlier than Mrs Mok, or 4 days earlier than the given deadline.
If the "4 days earlier" meant 4 days earlier than the deadline, then
24 (u + 5) = 30 (u - 4)
24u + 120 = 30u - 120
240 = 6u
40 = u
24 (u + 5) = 30 (u - 4)
24u + 120 = 30u - 120
240 = 6u
40 = u
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