Question

Sand and cement are mixed in the ratio 1.7 :1.9 to
make a slab of concrete. If the slab of concrete weighs
31 kg 104 g, how much sand was used to make it?​

Answer 1

Answer:

14.688 kg

Step-by-step explanation:

let the weight of sand be 1.7x and weight of slab be 1.9x .

so 1.7x+1.9x = 31kg +104 g

i.e 1.7x +1.9x = (31000+104)/1000

=3.6x = 31104/1000

= x = 31104/1000×1/3.6

= x = 8.64

so., 1.7x= 1.7 × 8.64

≈14.68 kg

hope it will help you.

thank you

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