A reel had 20 3/4 m of thread. How much thread was left in the reel after ali used 8 1/2 m of the thread? If he later used 7 3/8 m more thread from the reel, how much thread was left?
Answers
Answer:
If Ali used 8 1/2 m of the thread..
12 1/4m
If Ali used 7 3/8 m more..
4 7/8 m
Step-by-step explanation:
GIVEN :
Total length = 20 3/4
Length of thread Ali used = 8 1/2
Length of thread left = ?
Length of thread left
= 20 3/4 - 8 1/2
= 83/4 - 17/2
= (83×1) - (17×2)/4 {After LCM}
= 83-34/4
= 49/4
= 12 1/4 m
Length of thread left after using 7 3/8 m more = ?
Length of thread left after using 7 3/8 m more
= 12 1/4 - 7 3/8
= 49/4 - 59/8
= (49×2)-(59×1)/8 {After LCM}
= 98-59/8
= 39/8
= 4 7/8 m
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ANSWER:-
IF Ali used 8 1/2m of the thread=12 1/4
IF Ali used 7 3/8m more 47/8m.
STEP BY STEP EXPLORATION:-
GIVEN:-
Total length=20 3/4
length of thread Ali used=8 1/2
length of thread left=?
length of thread left=20 3/4-8 1/2
=83/4- 17/2=(83×1)-(17×2)/4(After lcm)
=83-34/4
=49/4
=12/4m
let the required no. be ×
first not second no=the sum
i.e,(-5/6)+×
×=8-(-5/6)
=(8/1)+(5/6)
=(6×8)+1×5
length of thread left after using 7 3/8m more=?
=12 1/4-7 3/8
=49/4-59/8
=98-59/8
=39/8
=4 7/8m