Question

solve this quickly plzz

Answer 1

Hy..
Friend...

Capacity of 1stTank =60 litres.
Amount of oil used by Sam=40% of 60 litres.
                            (40/100)*60 litres.
                                  =24 litres.
Amount of oil left = (60 - 24) litres
                            = 36 litres.
Acc. to Question, Amount of oil that was left, was poured in 2nd tank with capacity 40 litres.
Now,
Percentage of  oil in 2nd tank=(36/40)*100%
= 90 %. (1st Part Answer)

Now if 3 litres of oil is being used daily,
Amount of oil used in 10 days
= (3*10)=30 litres.
Amount of oil left in the tank
= (36-30)
= 6 litres.

Now percentage of oil in tank = (6/40)*100 %
  =15%

∴Percentage of oil left in tank = (100 - 15)% = 85% (2nd part answer)

Thank you
Brainly user...

Answer 2

Solution:

HOTS

22.

Capacity of tank A : 60 litres

Percent of oil used by Sam: 40 percent

Let,

Tank having 60 l. capacity be : x

Tank having 40 l. capacity be: y

How much oil he used?

40/100 × 60

= 4 × 6 (Zeroes cancellation done in this step.)

= 24 litres

So, oil left = (60-24) litres = 36 litres oil.

Hence, oil left in x was 36 litres.

Then, it is poured in y.

Now, let's answer the real question!

(I):-

As we know, it is poured into y.

Amount of oil poured : 36 litre

Therefore,

Percentage of oil in y :-

36/40 × 100

= 9/10 × 100 (Reducing 36 and 40 by the common of 4)

= 9 × 10 (Cancelled zeroes)

= 90%

Hence, Percentage of oil in y is 90%.

Let's do the second one!!

(II):-

Rate of oil usage : 3 litres / day

Days : 10

Oil used in 10 days : 3 × 10 = 30 litres

Oil left : 36 - 30 = 6 litres

Therefore,

6/40 × 100

= 6/4 × 10 (Zeroes cancelled)

= 3/2 × 10 (Reducing 6 and 4 by common of 2)

= 3 × 5 (2 demolished and 10 was changed into 5)

= 15 litres oil was left.

So, percentage of oil used:

100 - 15

= 85 litres.(In this step, Substraction was applied)

Required Answer:

1. 90 percent of oil was filled in 40 litre tank.
2. 85 percent of oil would be used by Sam in ten days in tank of capacity 40 litres.