Question

: Maths Revision Test

Q .1. If A and B are two sets such that n(A U B)= 18, n(A)= 8 and n(B)= 15, find n(A n B).


Q.2 A number is divided in the ratio 7:5. If the second part is 150, find the number.


Q.3. 102:X : : 34:110 find X.


Q.4. Find the number whose 64% is 512.


Q.5. A number afer increasing by 20% is 1500. Find the original number

Q .1. If A and B are two sets such that n(A U B)= 18, n(A)= 8 and n(B)= 15, find n(A n B).

Q.2 A number is divided in the ratio 7:5. If the second part is 150, find the number.

Q.3. 102:X : : 34:110 find X.

Q.4. Find the number whose 64% is 512.


Q.5. A number afer increasing by 20% is 1500. Find the original number​

Answer 1

Step-by-step explanation:

4) Let the number be 'x'.

64% of x = 516

(64x)/100 = 512

64x = 51200

x = 51200/64

= 800

Hence, x = 800