An ice cream shop sells the following sizes of ice cream cones: single scoop cones for $. 90, double scoop cones for $1.20, and triple scoop cones for $1.60. On a certain day, 120 cones were sold for $134. The number of single scoop cones was equal to the combined total of double and triple scoop cones.

69

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24