Nora and Abi shared some erasers. Nora had 30% of what Abi had at first. Nora then gave Abi
78 of what she had. How many less percent did Nora have than Abi in the end? Correct the answer to 1 decimal place.
| |
Nora |
Abi |
Comparing Nora
and Abi at first |
10x4 =
40 u |
3x4 =
12 u |
| Before |
8x5 =
40 u |
|
| Change |
- 7x5 =
- 35 u |
+ 7x5 =
+ 35 u |
| After |
1x5 =
5 u |
47 u |
30% =
30100 =
310The number of erasers that Nora had at first is repeated. Make the number of erasers that Nora had at first the same. LCM of 10 and 8 is 40.
Number of erasers that Abi had in the end
= 12 u + 35 u
= 47 u
Number of less erasers that Nora had than Abi in the end
= 47 u - 5 u
= 42 u
Number of less erasers that Nora had than Abi in the end in percent
=
4247 x 100%
≈ 89.4%
Answer(s): 89.4%
