Question

11. A tanker contains 500 litres of water. Due
to a small hole in the tanker, the quantity
of water is decreasing at the rate of 9 litres
every hour. What will be the quantity of
water left in the tank after 10 hours?
12. A submarine left the surface of the water
at the rate of 6 feet per second. At that
rate, how long would the submarine take
to reach -180 feet level?​

Answer 1

Answer:

11) the tank contain water 500 litres

the water decrease in one hour 9 litre

so after 10 hour the water is left in tank was

9 x 10 = 90

90 liter of rest of water by decrease in 500 litre

500 - 90 = 410

12) 30 seconds

Answer 2

Answer:

11. 410

Step-by-step explanation:

Quantity of water in a tanker - 500 litres

Decreasing rate of water - 9 litres

Quantity of water left after 10 hours =9 × 10 = 90

= 500 - 90

= 410 litres.

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