Jeremy has 40% more stamps than Valen. Eric has 80% the number of stamps Jeremy has.
- What is the ratio of the number of Valen's stamps to the number of Eric's stamps?
- If the total number of stamps of Jeremy's and Eric's is 342 more than Valen's, how many stamps does Jeremy have?
Jeremy |
Valen |
Eric |
7x5 |
5x5 |
|
5x7 |
|
4x7 |
35 u |
25 u |
28 u |
100% + 40% = 140%
140% =
140100 =
75 Jeremy's stamps : Valen's stamps = 35 : 25
80% =
80100 =
45 Eric's stamps : Jeremy's stamps = 28 : 35
Valen's stamps: Eric's stamps = 25 : 28 (a)
Jeremy's stamps + Eric's stamps = 35 u + 28 u = 63 u
Valen's stamps = 25 u
63 u - 25 u = 342
38 u = 342
1 u = 342 ÷ 38 = 9
Number of Jeremy's stamps
= 35 u
= 35 x 9
= 315 (b)
Answers: (a) 25 : 28; (b) 315