Apile of sand has a weight of 90kg the sand is put ina small bag a median bag and a large bag in a ratio 2: 3: 7 work out the weight. of the sand in each bag

Make an equation

2x+3x+7x=90

5x+7x=90

12x=90

x=90/12

Now multiply 90/12 times 2 to get the weight of the small bag-15kg

Then multiply 90/12 times 3 to get the weight of the median bag-22.5kg

Lastly multiply 90/12 times 7 toget the weight of the large bag-52.5kg

Small=15kg

median=22.5kg

large=52.5kg

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

2 x 503

step-by-step explanation:

its 1006