Explanation

4 TESTS AVERAGE IS 60. SO IF WE SUM THE TOTAL VALUE THEN

60*4=240

5 TESTS AVERAGE IS 58.SO IF WE SUM THE TOTAL VALUE THEN

58*5=290.

THEN TAKE THE DIFFERENCE OF SUM YOU GET

290-240= 50.

Explanation

Explanation

60x5 = 300

Explanation

Increased the price of a car from Rs. 3,50,000 to Rs. 3,70,000.

 Amount change = 3,70,000 - 3,50,00 = Rs. 20,000

 Therefore, Increased percentage = \frac{Amount\ of\ change}{Original\ amount}\times100

= \frac{20000}{350000}\times100=5\ \frac{5}{7}\%

 Hence, the percentage of price increased is 5\ \frac{5}{7}\%

Explanation

Le the required time be x seconds.

More meters, More time (Direct Proportion)

∴0.128:25::1:x⇒0.128x=25×1x=250.128=25×1000128⇒x=195.31

∴ Required time = 195 sec (approximately)

Explanation

17% of 1620 is 275.4

Working out 17% of 1620

Write 17% as 

17

100

Since, finding the fraction of a number is same as multiplying the fraction with the number, we have

17

100

 of 1620 = 

17

100

 × 1620

Therefore, the answer is 275.4

Explanation

Let the price of the chair be =x

Let the price of table =400+x

6 of each sold at 4800

⟹6×(400+x)+6×x=4800

⟹x=200 

chair price =200 , table price =600

required percentage =600200​×100

                                    =3331​%

Explanation

Basic rate per hour = Re. (20/40) = Re. 1/2.

Overtime per hour = 125 % of Re. 1/2 = Re.5/8.

He worked x hours overtime.

Then 20 + 5/8 x = 25 (or) = 5/8 x = 5

X = 40/5 = 8 hours

=> he worked in all for (40 + 8) = 48 hours.

Explanation

Part of work completed by Hamza in a day = 1/15 Part of work completed by Aslam in a day = 1/12 Part of work completed by them in a day = (1/15)+(1/12) = 3/20 Part of work completed by them in 4 days = (3/20)*4 = 3/5 Fraction of work left

= 1-(3/5)
= 2/5

Explanation

From the given sequence, we see that the pattern followed is:

3 + 1 = 4

4 + 2 = 6

6 + 3 = 

9 + 4 = 13

13 + 5 = 18