Question

53% of the weight of a concrete slab is cement while the rest is stone and sand if there is 2 kg 160 gram more cement than stone and sand in the concrete slab how much does the slab weigh?

Answer 1

The concrete slab weight is 36 kg.

Step-by-step explanation:

Let the weight of the concrete slab is x kg.

Given:

• 53% of the weight of a concrete slab is cement while the rest is stone and sand.

$= > cement \: weight \: = 0.53x \\ = > stone \: and \: sand \: weight \: = 0.47x$

• If there is 2 kg 160 gram more cement than stone and sand in the concrete slab.

$= > cement \: weight \: = 2.160 + stone \: and \: sand \: weight$

$= > 0.53x = 2.160 + 0.47x \\ = > 0.53x - 0.47x = 2.160 \\ = > 0.06x = 2.16x \\ = > x = 36 \: kg$

The concrete slab weight is 36 kg.