Question

.pl, z solve question number 11 ​

Answer 1

$HEYA \:$

let the time that he/she devotes for mathematics be = x

Total time that he/she devotes upon study = 7 1/4 hour =( 7 + 0.25 )hour

= 7.25hours

Time he/she devotes for physics and chemistry = 4 1/3 hour = 4 + 0.33

= 4.33hours.

ACCORDING TO THE DEFINITION OF EQUALITY.

( x + 4.33hours ) = 7.25hours.

x =( 7.25 - 4.33)hours.

x = 2.916hours

So, The time she devotes for mathematics is 2.91hours

or 2 9/10hours ( appx )

Answer 2

Answer:

2..9/12

Step-by-step explanation:

total time of studies daily= 7 1/4 =29/4 hours

time given to physics and chemistry =4  1/3  =13/3 hours

time devoted for mathematics  = total time for studies - study time of physics                       and chemistry

hence

time devoted to mathematics daily = 29/4  -  13/3

                                              =35/12 hours

                                        = 2  9/12 hours

.

.

i don't have a phone otherwise i will attach a picture of it

.

.

hope it helps u