Question

(1) Multiply the sum of 4/3 and 11/4 by 15/7. The product is divided by 63/16. What will be the resultif 11/9 is subtracted from the quotient?

(2)in an examination, A and B secured 6/7 and 5/6 of the total marks respectively. If ,B secured 20 marks less than A, find the marks secured by A and B individually.

(3)i) Find the value of:8.5% of 5 kg.

ii) Find the whole quantity if:

6% of it is 360 m.

(4)A polyhedron has 20 faces and 12 vertices. Find the number of edges.​

Answer 1

Answer:

1) Answer in the 2 images attached in the attachment bar

2)???

3)

i) The solution of the expression is 8.5% of 5 kg = 0.425

ii) Let the total meter be = x

According to Question,

6% of x = 360 m

6/100 of x = 360 m

6x/100 = 360 m

Multiply 100 on both the sides of the equation

100(6x/100) = 360 m × 100

6x = 36000 m

x = 36000 m / 6

x = 6000 m

So,

Whole quantity = 6000 m or 6 km