Respuesta :

210 donuts/hour. 90mins is 1hr30min. Half of 210 is 105. 210+105=315. so at that rate the new donut shop would have sold 315 donuts.

Hey this is me again ....

[tex] \frac{210}{60} = \frac{x}{90} \\ [/tex]

[tex] \frac{21}{6} = \frac{x}{90} \\ [/tex]

Multiply both sides by 90

[tex]90 \times \frac{21}{6} = 90 \times \frac{x}{90} \\ [/tex]

[tex]15 \times 21 = x[/tex]

[tex]x = 315[/tex]

So that shop would sell 315 donuts in 90 minutes

Holy crab that is too much donuts impressive....

Don't have a good day , Have a great day ❤