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Question
primary 6 | Maths
| Algebra
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Help me to solve this problem
Date Posted: 4 years ago
Views: 260
at first
total = 12x12 = 144
removed: d
left: 144-d
put into 8 boxes equally
1 box
= (144-d) ÷ 8
= (144-d)/8
= 18 - d/8
give away 1 box
left = 144-d - [18 - d/8 ]
= 144-d - 18 + d/8
= 126 - 7d/8
(a)
126 - 7d/8
(b)
subst. d= 120,
126 - 7d/8 = 126 - (7 x 120)/8
= 126 - 840/8
= 126 - 105
= 21
.
.
.
total = 12x12 = 144
removed: d
left: 144-d
put into 8 boxes equally
1 box
= (144-d) ÷ 8
= (144-d)/8
= 18 - d/8
give away 1 box
left = 144-d - [18 - d/8 ]
= 144-d - 18 + d/8
= 126 - 7d/8
(a)
126 - 7d/8
(b)
subst. d= 120,
126 - 7d/8 = 126 - (7 x 120)/8
= 126 - 840/8
= 126 - 105
= 21
.
.
.
See 1 Answer
done
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Packed donuts = d
One box of packet donuts = d/8
One box of packet donuts = d/8
Date Posted:
4 years ago
TkS
Thanks
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