2. Farmers A,B and C are planting rice saplings in a field. A has planted x saplings, B has planted 5 saplings less than A and C has planted 5 saplings more than A. How many saplings have been planted by B and C ? The total number of saplings to be planted is 100 less than 4 times the number of saplings planted by A. Express the total number of saplings to be planted using x.
Answers
Answer:
Given :-
A =x saplings
B = x-5 saplings
C= x+5 saplings
A + B+C= 4x-100
solution :-
x + (x -5) + (x+5) = 4x-100
3x = 4x-100
3x-4x = -100
-x = -100
x=100
A = 100 saplings
B = (100 - 5= 95 saplings )
C = (100+5=105 saplings )
Answer:
No. of saplings planted by A = x
No. of saplings planted by B = x - 5
No. of saplings planted by B = x + 5
Total no. of saplings planted = 4x - 100
Total no. of saplings planted = No. of saplings planted by A + No. of saplings planted by B + No. of saplings planted by C
.°. 4x - 100 = x + x - 5 + x + 5
.°. 4x -(x + x + x) = 100 + 5 - 5
.°. 4x - 3x = 100
.°. x = 100
No. of saplings planted by B = x - 5
= 100 - 5
= 95
No. of saplings planted by C = x + 5
= 100 + 5
= 105
Total no. of saplings planted = 4x - 100
= 4(100) - 100
= 400 - 100
= 300