contestada

The Math Club sold roses and tulips this year for Valentine's Day. The number of roses sold was twice the number of tulips sold. Tulips were sold for $2 each and roses for $5 each. The club made $240.00. How many roses were sold?

Respuesta :

godispunishingme
answer: about 35 roses
explanation: make 2 equations, one for price and one for number sold

let r be roses and t be tulips.

r + t = 2r

2t + 5r = 240

isolate for t in the second equation and substitute it into the first:

2t = 240 - 5r
t = 120 - 5/2r

r + (120 - 5/2r) = 2r
120 = 2r + 5/2r - r
120= 7/2r
240/7 = r
35 = r (approximately)

Otras preguntas