14-09-2018
Mathematics

contestada

the ratio of pencil to rulers is 6:10. the are 21 pencils. how many rulers are there

Respuesta :

MrGumby MrGumby

14-09-2018

There would be 35 rulers.

In order to solve this, use cross multiplication.

6/10 = 21/x -----> cross multiply

10*21 = 6*x

210 = 6x

35 = x

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