The ratio of laptops to tablets in the stock room of a store is 13 : 17. If there are a total of 90 laptops and tablets in the stock room, how many laptops are in the stock room?

39  laptops

Step-by-step explanation:

Step one:

Given data

The ratio of laptops to tablets in the stock room of a store is 13 : 17

The sum of the ratio is= 13+17= 30

there are a total of 90 laptops

Required

The number of laptops

Step two:

Applying the part to all method

let the number of laptops be x

so

13/30= x/90

cross multiply we have

30x= 13*90

30x= 1170

x= 1170/30

x=39  laptops

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step-by-step explanation:

the number 100 represents the number of trials in the experiment.

49/100 represents the experimental probability of the coin landing heads up.

step-by-step explanation: