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Question
primary 5 | Maths
| Rate & Ratio
2 Answers Below
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please help me solve this hard question :/
Date Posted: 5 years ago
Views: 343
If ratio of Leon to Ben = 6 : 5,
Then Leon has 6 units. Ben has 5 units
Since Leon has twice of John,
John has 6 units ÷ 2 = 3 units
Difference between Ben and John
= 5 units - 3 units
= 2 units
2 units = 30 marbles
1 unit = 30 marbles ÷ 2 = 15 marbles
Total = 6 + 5 + 3 = 14 units
= 14 x 15 marbles
= 210 marbles.
If divided equally, 210 marbles ÷ 3 = 70 marbles
John has 3 units now = 3 x 15 marbles
= 45 marbles
70 - 45 = 25
He must be given 25 more marbles
Then Leon has 6 units. Ben has 5 units
Since Leon has twice of John,
John has 6 units ÷ 2 = 3 units
Difference between Ben and John
= 5 units - 3 units
= 2 units
2 units = 30 marbles
1 unit = 30 marbles ÷ 2 = 15 marbles
Total = 6 + 5 + 3 = 14 units
= 14 x 15 marbles
= 210 marbles.
If divided equally, 210 marbles ÷ 3 = 70 marbles
John has 3 units now = 3 x 15 marbles
= 45 marbles
70 - 45 = 25
He must be given 25 more marbles
See 2 Answers
done
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Do remember than the ratio applies to john, even though they did not mention anything!!
Date Posted:
5 years ago
done
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clear
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Hi,your model drawing is correct, you just need to fine tune a bit. I had uploaded steps by steps model drawing video presentation on YouTube https://youtu.be/cfy0JwS_E84 , you can learn from there to improve your math.
Date Posted:
5 years ago
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