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Question
primary 5 | Maths
| Area & Volume
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Help me to solve the problem
Date Posted: 3 years ago
Views: 509
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A) Convert all Large box into small box ratios,
And focus on small boxes for painting:
12 large / 2 large = 6 units
2 large Box : 5 small box
= 12 Large Box : 30 small box (multiply by 6)
So 12 large is same as 30 small,
So 11 small + 12 large
= 11 small + 30 small
= 41 small boxes
41 small => 82 L paint
1 small => 2L paint //
B) remaining box:
Remaining Small = 34 - 11
= 23 small boxes
Remaining Large = 15 - 12
= 3 Large boxes
= 3 * 5 / 2 (ratio 2:5)
= 7.5 small boxes
Total remaining = 23 + 7.5
= 30.5 small boxes
Remaining paint = 30.5 * 2L
= 61L of paint //
And focus on small boxes for painting:
12 large / 2 large = 6 units
2 large Box : 5 small box
= 12 Large Box : 30 small box (multiply by 6)
So 12 large is same as 30 small,
So 11 small + 12 large
= 11 small + 30 small
= 41 small boxes
41 small => 82 L paint
1 small => 2L paint //
B) remaining box:
Remaining Small = 34 - 11
= 23 small boxes
Remaining Large = 15 - 12
= 3 Large boxes
= 3 * 5 / 2 (ratio 2:5)
= 7.5 small boxes
Total remaining = 23 + 7.5
= 30.5 small boxes
Remaining paint = 30.5 * 2L
= 61L of paint //
Thank you so much
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