Mary and Lucy shared some marbles. Mary had 70% of what Lucy had at first. Mary then gave Lucy
58 of what she had. How many more percent did Lucy have than Mary in the end? Correct the answer to 1 decimal place.
| |
Mary |
Lucy |
Comparing Mary
and Lucy at first |
10x4 =
40 u |
7x4 =
28 u |
| Before |
8x5 =
40 u |
|
| Change |
- 5x5 =
- 25 u |
+ 5x5 =
+ 25 u |
| After |
3x5 =
15 u |
53 u |
70% =
70100 =
710The number of marbles that Mary had at first is repeated. Make the number of marbles that Mary had at first the same. LCM of 10 and 8 is 40.
Number of marbles that Lucy had in the end
= 28 u + 25 u
= 53 u
Number of more marbles that Lucy had than Mary in the end
= 53 u - 15 u
= 38 u
Number of more marbles that Lucy had than Mary in the end in percent
=
3815 x 100%
≈ 253.3%
Answer(s): 253.3%
