Question

a village having a population of 4000 requires 150 litres of water per head day it has a tank measuring 20 metres into 15 metres into 6 metres for how many days will the water of this time last
​

Answer 1

Step-by-step explanation:

Sarita bought eggs at R 8.40 a dozen. At what price per hundred must she sell them so as to earn a profit of 15% ?

ANSWER

Cost per egg =

12

8.4

=0.7

Cost per hundred egg =Rs70

Let selecting price per hundred be Rs.y

⇒

70

y−70

×100=15

⇒10y−700=105

⇒y=80.5Rs

Answer 2

Given:

$\bold{⇒l×b×h=20×15×6}$

$\bold{⇒Capacity of tank =l×b×h=(20×15×6)m³}$

=1800m³

=1800000 litre

=4000×150 litres

=600000 litres

$\bold{⇒Consumption of water in 1 day}$

=4000×150 litres

=600000 litres

Water of this tank will last for = $\bold{\cancel{\dfrac{1800000}{600000}}}$

=3 days

hope it helps ☺️