Let the business value change from A to B.
Then, 4% of A = 5% of B
⇒ 4A/100 = 5B/100
⇒ B = 4A/5
∴ change in business = (A - 4A/5) = A/5

Correct Option: C

Let the business value change from A to B.
Then, 4% of A = 5% of B
⇒ 4A/100 = 5B/100
⇒ B = 4A/5
∴ change in business = (A - 4A/5) = A/5
Percentage slump in business = {(A/5)/A} x 100 % = 20%

Let one-third of 1206 is N% of 134.
∵ 1206/3 = (N x 134)/100
∴ N = (402 x 100) / 134

Correct Option: C

Let one-third of 1206 is N% of 134.
∵ 1206/3 = (N x 134)/100
∴ N = (402 x 100) / 134 = 300

∵ 96% of P = 23040
∴ P = (23040 x 100) / 96 = 24000

Correct Option: B

∵ 96% of P = 23040
∴ P = (23040 x 100) / 96 = 24000

∵ 95% of gross value = 9595
∴ gross value = (9595 x 100)/95

Correct Option: C

∵ 95% of gross value = 9595
∴ gross value = (9595 x 100)/95 = 10100

∵87¹/₂% of P = 3500
⇒ {(175/2) x P} / 100 = 3500

Correct Option: C

∵87¹/₂% of P = 3500
⇒ {(175/2) x P} / 100 = 3500
∵ P = (3500 x 2 x 100) / 175 = 4000