Victoria had 90% as many lollipops as Sabrina. Victoria gave away 20% of her lollipops and Sabrina bought another 30 lollipops. As a result, Victoria now has 70% as many lollipops as Sabrina. Find the number of lollipops that Victoria had in the end.
| |
Victoria |
Sabrina |
| Before |
9x7 |
10x7 |
| Change |
- 1.8x7 |
+ 30 |
| After |
7.2x7 |
10x7 + 30 |
Comparing Victoria and
Sabrina in the end |
7x7.2 |
10x7.2 |
| |
Victoria |
Sabrina |
| Before |
63 u |
70 u |
| Change |
- 12.6 u |
+ 30 |
After
|
50.4 u
|
70 u + 30 =
72 u |
90% =
90100 =
91020% x 9
=
20100 x 9
= 1.8
70% =
70100 =
710The number of lollipops that Victoria had in the end is repeated.
Make the number of lollipops that Victoria had in the end the same.
The number of lollipops that Sabrina had in the end is repeated.
70 u + 30 = 72 u
72 u - 70 u = 30
2 u = 30
1 u = 30 ÷ 2 = 15
Number of lollipops that Victoria had in the end
= 50.4 u
= 50.4 x 15
= 756
Answer: 756
