Answer:
the number was probably multiplied by 3 and then divided by 2 which is 18
Answer:
Assume as book to be x and pen to be y.
3x+2y=395 equation 1
2x+5y=355 equation 2
Make any variable either x or y to be equal.
3x*2+2y*2=395*2
2x*3+5y*3=355*3
Here, I am making x as same so I cross multiplied
6x+4y=790 equation 3
6x+15y=1065 equation 4
Put minus sign in any one of the equation 3 or equation 4 in order to cancel out x.
6x+4y=790
-6x-15y= -1065
0 - 11y= - 275
y= - 275/ - 11
y= 25
As we got y, we can put the value of y in equation 1 or equation 2.
3x+2y=395
3x+2*(25)=395
3x+50=395
3x=395-50
3x=345
x=345/3
x=115
As we assumed the book to x and pen to be y
price of book = Rs. 115
price of pen= Rs. 25
Answer:
D. m=72
Step-by-step explanation:
So
- M/9=8
- To get rid of the 9, you have to multiply both sides by 9
- M/9 ×9=8×9
- M=8×9
- 8×9=72
- M=72
Answer:
20 1/2
Step-by-step explanation:
because area equals length times width
Answer:
Step-by-step explanation:
