Adam and Bryan have some money in the ratio of 7 : 2
After Adam spends $360,
the amount that Adam has becomes is
16 that of Bryan's.
- How much does Adam have at first?
- How much does Bryan have?
- How much less does Adam have than Bryan in the end?
|
Adam |
Bryan |
Before |
7 x 3 = 21 u |
2 x 3 = 6 u |
Change |
- $360 |
No change |
After |
1 x 1 = 1 u |
6 x 1 = 6 u |
The amount that Bryan has remains unchanged.
Make the amount the same using the LCM of 2 and 6.
LCM of 2 and 6 = 6
Amount that Adam receives
= 21 u - 1 u
= 20 u
20 u = 360
1 u = 360 ÷ 20 = 18
(a)
Amount that Adam has at first
= 21 u
= 21 x 18
= $378
(b)
Amount that Bryan has
= 6 u
= 6 x 18
= $108
(c)
Amount that Adam has less than Bryan in the end
= 6 u - 1 u
= 5 u
= 5 x 18
= $90
Answer(s): (a) $378; (b) $108; (c) $90