18 of Adam's money is equal to
78 of Bryan's money.
Adam has $280.
- How much does Bryan have?
- How much does Adam have more than Bryan?
- How much do they have altogether?
(a)
Make the numerators the same using the LCM of 1 and 7.
LCM of 1 and 7 = 7
1 x 78 x 7 of Adam's money =
7 x 18 x 1 of Bryan's money
756 of Adam's money =
78 of Bryan's money
Amount that Adam has = 56 u
Amount that Bryan has = 8 u
56 u = 280
1 u = 280 ÷ 56 = 5
Amount that Bryan has
= 8 u
= 8 x 5
= $40
(b)
Amount that Adam has more than Bryan
= 56 u - 8 u
= 48 u
= 48 x 5
= $240
(c)
Amount that they have altogether
= 56 u + 8 u
= 64 u
= 64 x 5
= $320
Answer(s): (a) $40; (b) $240; (c) $320