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Elena-2011 [213]
4 years ago
11

The ratio of boys to girls in a group is 3:1. If there are 28 more boys than girls, work out how many people there are in total.

Mathematics
1 answer:
Ber [7]4 years ago
7 0
---------------------------------------------------
Ratio 
---------------------------------------------------
Boys : Girls : Total
  3     :   1         4

---------------------------------------------------
Difference in shares :
---------------------------------------------------
Difference in shares = 3 - 1 = 2

---------------------------------------------------
Find 1 share :
---------------------------------------------------
2 shares = 28
1 share = 28 ÷ 2 = 14

---------------------------------------------------
Find 4 shares (Total) :
---------------------------------------------------
1 share  = 14
4 shares = 14 x 4 = 56

---------------------------------------------------
Answer: There are 56 people in total.
---------------------------------------------------

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