Question

Typing at a speed of 32 words per minute ,raju can type a manuscript in half and hour.if the speed is increased to 40 words per minute then how long will it take him to type the same manuscript

Answer 1

Answer:    

Hope this would help you

Please mark as brainliest !

T = 1 hr 12 mins

Step-by-step explanation:

S = D/T                     S =32/1          D =?         T =90

32/1 = D / 90

32*90 = D

2880 = D

Speed changes

S' = D/ T                S' =40/ 1           D = 2880     T =?

40/ 1 =  2880 /T

40/ 2880 =1/T

2880 /40 = T

72 mins = T

T = 1 hr 12 mins

Answer 2

Answer:

72 min or 1 hr 12 min

Step-by-step explanation

speed 1= 32 words/min

time taken=1 and 1/2 hour or 90 min

so no. of words in manuscript =32 words/min*90 min=2880 words

speed 2=40 words/min

therefore time taken=2880 words/40 words/min=72 min or 1 hr 12 min