(a) We need to find 15 % of 250

Therefore,

15 % of 250 = × 250

=

= 37.5

(b) We need to find 1% of 1 hour

We know that,

1 hour = 60 minutes

Therefore,

1 % of 1 hour = 1 % of 60 minutes

= × 60

= minutes

(c) We need to find 20% of Rs 2500

20 % of Rs 2500

Therefore,

20 % of Rs 2500 = × 2500

= 2 × 250

= Rs 500

(d) We need to find 75% of 1Kg

Therefore,

75 % of 1 kg = × 1

= 0.75 kg

We know that,

1 kg = 1000 g

Hence,

0.75 kg = (0.75 × 1000) g

= 750 g