The ratio of adults to children on a train in 7:2. There are 245 adults on the train. Find the total number of people on the train?

315 people

Step-by-step explanation:

Using the given ratio, we can figure out the number of children on the train by doing cross multiplication.

Let x = # of children on train.

7/2 = 245/x

7x = 490

x = 70 children

The total number of people = 70 + 245 = 315 people total

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answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

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the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm