Maths STD 6 CH 12 ratio and proportion

Click here 4 STD 6 maths ch 12 ratio and proportion solution




                                                                                  It can be like that  a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five." In problems involving proportions, we can use cross multiplications to test whether two ratios are equal and form a proportion.


                  To use proportions to solve ratio word problems, we need to follow these steps:

Identify the known ratio and the unknown ratio.

Set up the proportion.

Cross-multiply and solve.

Check the answer by checking the result into the unknown ratio.

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