Aptitude - Average - Discussion

Ten over run rate is 3.2

So 10*3.2= 32.

Then Target 282-32 = 250.

Remaining over is 40.

250/40= 6.25 answer.

Let the run in 5th match be x.

Total runs scored in 4 matches = 80*4 = 320.

Now, when 320 added with x avg becomes 84 (as per question).

= (320+x)/5 = 84.

x = 100.

Answer check: (320+100)/5 = 84.

First we calculate 10 overs score using run rate (3.2).

= 10*3.2 = 32 runs.

Target = 282.

We need 250 runs in 40 overs (282-32).

So, 250/40 = 6.25.

Note we have a formula => Runrate*Overs = Run Scored.

1st > we have given Runrate and overs, so we are calculating the run scored.

ie. 3.2*10 = ? (Run Scored) we get Run scored = 32.

2nd > we have to find the run scored in the remaining 40 overs so we subtract the run scored in the first 10 over from the Total score.

i.e. 282-32=250.

Now we have run scored=250 and overs=40, so we find will find the run rate.

i.e. Runrate*Overs = Run Scored.

Runrate*40 = 250.

Answer==> Runrate = 6.25.

Iron manufacturing company produced a total of 3000 tons of iron in January of a particular year. Starting from February its production increased by 200 tons every month over the previous months until the end of that year. Find its average monthly production (in tons) for that year.

RR runs Target-282.

1-10 overs 3.2 32.

11-40 overs ? 250.

RR = Runs/Overs.

RR = 250/40.

Answer: 6.25.

@Apple.

You give example test match in that problem 80*4 = 320 but you tack it as 360?

We Know Run Rate = Runs/overs.

Therefore, in the first 10 overs.

Run Rate = Runs/Overs.
3.2 = Runs/10.

Runs = 3.2*10.
Runs = 32.

Now 32 runs is scored in the first 10 Overs.

Target = 282.
Target = 282-32 = 250.

Run Rate = Target runs/Remaining Overs.
Run Rate = 250/40.

Run Rate = 6.25.

(282-(3.2*10))/40 = 6.25.

Required run-rate = (282-(3.2*10))/40 = 6.25.