Tony requires 4 pieces of wood each of which are 68 cm long . If wood is sold in 2 metres or 3metre lengths a) find the length of wood he must buy? b) How much will he have left over from that length?
Answers
Step-by-step explanation:
Here is the answer to your query:
a) Length of wood required by Tony = 4 × 68 cm = 272 cm
Now,
272 cm = 200 cm + 72 cm = 2 m 72 cm (1 m = 100 cm)
Therefore, Tony should buy a wood of length 3 metre.
b) Now, 3 m = 300 cm
Length of wood left unused = 300 − 272 = 28 cm
Given :
• Tony requires 4 pieces of wood each of length 68 cm.
• Wood is sold in 2m/3m of length.
To Find :
• The length of the wood piece he must buy.
• How much will he have left over from that length.
Solution :
First we will have to find the total length of wood that Tony needs. Then by comparing that length with the length of the wood available for buying, we will get to know the length of the wood appropriate for buying. Subtracting the length he requires from the total length will give us the left over length.
→ No. of wood pieces Tony requires = 4
→ Length of each wood piece = 68 cm
→ Total length of the wood piece required = 4 x 68 = 272 cm
Converting this value into meters (dividing by 100)
= 2 m 72 cm
A 2 m long wood would be insufficient therefore a 3 m long wood will be required.
Therefore a 3 m long wood piece would be required.
Now, the length of wood left:
= 300 cm - 272 cm
= 28 cm
28 cm of wood will be left