(a) Let the quantity be x

Therefore,

5 % of x = 600

5 % × x = 600

× x = 600

x = 600 ×

= 120 × 100

= 12000

Thus, the quantity is 12,000

(b) Let the quantity be x

Therefore,

12 % of x = 1080

12 % × x = 1080

× x = 1080

x = 1080 ×

= 90 × 100

= Rs 9000

Thus, the quantity is Rs 9,000

(c) Let the quantity be x

Therefore,

40 % of x = 500

40 % × x = 500

× x = 500

x = 500 ×

= 12.5 × 100

= 1250 km

Thus, the quantity is 1250 km

(d) Let us assume the quantity to be x

Therefore,

70 % of x = 14

= 70 % × x = 14

= × x = 14

x = 14 ×

= 2 × 10

= 20 min

Thus, the quantity is 20 min

(e) Let us assume the quantity to be x

Therefore,

8 % of x = 40

= 8 % × x = 40

= × x = 40

x = 40 ×

= 5 × 100

= 500 L

Thus, the quantity is 500 L