Question

6. The angles of a triangle are in the ratio 3:7: 8. Find the greatest and the smallest angles.
The sum of the angles of a triangle is 180°.
2
7 of a triangle are in the ratio 3: 2: 4. If. The sides the perimeter of the triangle is
27 cm, find the length of each side.
8. An alloy of zinc and copper weighs 12 kg. If, in the alloy, the ratio of zinc and copper is
1: 4, find the weight of copper in it.
9. How will 31,500 be shared between A, B and C, if A gets the double of what B gets,
and B gets the double of what C gets ?
10. Mr. Gupta divides 81,000 among his three children, Ashok, Mohit and Geeta, in such
a way that Ashok gets four times what Mohit gets and Mohit gets 2.5 times what Geeta
gets. Find the share of each of them.​

Answer 1

Answer:

6: triangle are in the ratio 3:7:8

3 = 3x

7 = 7x

8 = 8x

the sum of triangle = 180°

3x + 7x + 8x =180°

18x = 180°

x = 180°\18

x = 10

3x = 3×10 = 30

7x = 7× 10 = 70

8x = 8×10 = 80

the greatest angle of 80

and the smallest angle of 30