Question

please solve both the problems for me

Answer 1

1. the 80% of 15 is 12 , hence 12 sweets to "sonu".
and
the 20% of 15 is 3 , hence "monu" got 3 sweets.
2. we know that sum of all angles of triangle is 180degree
then
ratio is 2:3:4
then
put 2x+3x+4x = 180
9x=180
x=20
then
first angle is 2×20= 40degree
second angle is 3×20=60degree
third angle is 4×20=80degree
so sum of all angles is 180
so solve

Answer 2

1. let manu get x then sonu get 4x
A/Q
x+4x=15
x=3
manu will get 3 and sanu will get 12
2.let the angles of triangle be 2x, 3x, and 4x
then
2x+3x+4x=180(sum of the angles of triangle is 180°)
9x=180
x=20
hence the angle of triangle are 40°, 60°, 80°.