Question

Sand and cement are in the ratio 6 : 5 in a mixture

weighing 671 kg. How much sand must be added to the

mixture so as to make the ratio 8 : 5 ? io​

Answer 1

122 kg of sand must be added to the mixture.

Step-by-step explanation:

Given : Sand and cement are in ratio 6:5 in a mixture weighing 671 kg.

To find : How much sand must be added to the mixture ,so as to make the ratio 8:5.?

Solution :

Let the ratio be 'x'

Sand and cement are in ratio 6:5 in a mixture weighing 671 kg.

So, the sand and cement is 6x and 5x.

So, Sand is

Cement is

The ratio of sand to cement is 366 : 305

Let x kg of sand must be added to the mixture ,so as to make the ratio 8:5.

i.e.

Therefore, 122 kg of sand must be added to the mixture.