The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7?

Question

a.)30 numbers
b.)28 numbers
c.)24 numbers
d.)20 numbers

2.)A school band has a brass section of trumpet, trombone, and tuba players.There are twice as many trombones as tubas and half as many trombones as trumpets. If there are two tubas in the band, what is the total number of players in the brass section?
a.)8 players
b.)10 players
c.)12 players
d.) 14 players

3.)It cost Neil $2.88 to make 2 dozen muffins.If Neil sold 6 dozen muffins, how much profit did he make from the sale?
a.) $40.32
b.) $48.96
c.) $24.48
d.) $57.60

4.)Beginning at 6:50 am, planes leave an airport for New York every 45 minutes.You arrive at the airport at 10:15 am How long will you have to wait for the next plane to New York?
a.) 15 minutes
b.) 20 minutes
c.) 25 minutes
d.) 30 minutes

Answer 1

2. X Tubas.
2x Trombones.
4x Trumpets.

X = 2 Tubas
2x = 2 * 2 = 4 Trombones.
4x = 4 * 2 = 8 Trumpets.

Total players = 2 + 4 + 8 = 14.

3. Cost = (2.88/2) * 6Dozens = $8.64 for
6 dozens.
Profit = Sale price - Cost.

4. From 6:50AM to 10:15AM = 3h and 25 min = 205 Min.

205Min * 1Plane/45Min = 4.55555556 Planes. = 4 and 0.55555556 planes.

T = 45Min - 0.55555556Plane * 45Min/plane = 45Min - 25Min = 20 Min.