The number of mandarin oranges Zeph bought in April was 40% more than in March. In May, he bought 70% less mandarin oranges than in April. If there were 319 more mandarin oranges in March than May, how many mandarin oranges did Zeph buy in March?
| March |
April |
May |
| 5x10 |
7x10 |
|
| |
10x7 |
3x7 |
| 50 u |
70 u |
21 u |
100% + 40 = 140%
140% =
140100 =
75April : March = 7 : 5
100% - 70% = 30%
30% =
30100 =
310 May : April = 3 : 10
The number of mandarin oranges in April is repeated. Make the number of mandarin oranges in April is the same. LCM of 7 and 10 is 70.
Number of more mandarin oranges in March than May
= 50 u - 21 u
= 29 u
29 u = 319
1 u = 319 ÷ 29 = 11
Number of mandarin oranges that Zeph bought in March
= 50 u
= 50 x 11
= 550
Answer(s): 550
