Question

Q12 Ravi bought 10m 15cm of ribbon, he gave 7m 18cm of the ribbon to his brother.
What is the length (in m) of ribbon left with Ravi?​

Answer 1

Given data : Ravi bought 10 m 15 cm of ribbon, he gave 7 m 18 cm of the ribbon to his brother.

To find : What is the length (in m) of ribbon left with Ravi ?

Solution :

→ Length of Ravi's ribbon = 10 m 15 cm

Here, we need to convert unit of length ribbon, cm to m. So now,

→ 15 cm = { 15/100 } m = 0.15 m

Hence,

→ Length of Ravi's ribbon = {10 + 0. 15} m

→ Length of Ravi's ribbon = 10.15 m

Now,

→ Length of Ravi's brother's ribbon

= 7 m 18 cm

Here, we need to convert unit of length ribbon, cm to m. So now,

→ 18 cm = { 18/100 } m = 0.18 m

Hence,

→ Length of Ravi's brother's ribbon

= { 7 + 0.18 } m

→ Length of Ravi's brother's ribbon

= 7.18 m

Now, we need to subtract Length of Ravi's brother's ribbon from Length of Ravi's ribbon to find the length of ribbon left with Ravi.

→ Remaining length of ribbon with Ravi

= { 10.15 - 7.18 } m

→ Remaining length of ribbon with Ravi

= 2.79 m

Answer : Hence, 2.97 m of ribbon left with Ravi.