Question

7. Express the first quantity as a percentage of the second quantity. (a) 12 hours of 5 days (b) 1,280 m of 8 km. ​

Answer 1

Answer:

1. 10% ; 2. 16%

Step-by-step explanation:

$\bigstar{\underline{\underline{{\sf\ \red{ Given:-}}}}}$

1. 12 hours of 5 days
2. 1280 m of 8km

$\bigstar{\underline{\underline{{\sf\ \red{ To \: Find:-}}}}}$

a) 12 hours of 5 days

b) 1280 m of 8km

$\bigstar{\underline{\underline{{\sf\ \red{ Solution:-}}}}}$

a) 12 hours of 5 days

⇒ 1 day = 24 hours

⇒ 5 days = 5 × 24 = 120 hours

⇒ 12/120 × 100

⇒ 10%

___________________

b) 1280 m of 8km

⇒ 1km = 1000m

⇒ 8km = 8×1000= 8000m

⇒ 1280/8000 × 100

⇒ 128/8

⇒ 16%

Therefore, The percentages are:-

1. 10% ; 2. 16%

Answer 2

Step-by-step explanation:

★

Given:−

12 hours of 5 days

1280 m of 8km

ToFind:−

a) 12 hours of 5 days

b) 1280 m of 8km

Solution:−

a) 12 hours of 5 days

⇒ 1 day = 24 hours

⇒ 5 days = 5 × 24 = 120 hours

⇒ 12/120 × 100

⇒ 10%

___________________

b) 1280 m of 8km

⇒ 1km = 1000m

⇒ 8km = 8×1000= 8000m

⇒ 1280/8000 × 100

⇒ 128/8

⇒ 16%

Therefore, The percentages are:-

1. 10% ; 2. 16%