Question

pls show working pls

1.The prices of a bike and T.V are in the ratio 3:2. If the bike costs 6000 A.E.D. Find the price of T.V.

2. Ali and his sister’s ages are in the ratio 5 :4. If Ali is 45 years old, How old is his sister?

3. In a school library, the ratio of French books to that of Arabic books is 4 : 5. If there are 384 French books, find the number of Arabic books in the library.

Answer 1

Answer:

1) bike:tv

3:2

6000:?

so 3 parts =6000

then 1 part=6000/3=2000

then price of tv= 2000×2=4000rs

2) Ali: Ali sister

5:4

Ali age=45 yrs

so, 5parts=45

then 1part=45/5=9yrs

here,Ali sister age is 4 parts,then

4×9=36 yrs

3). French books: Arabic books

4:5

French books=384

that means 4 parts=384

then 1 part is = 384/4=96 books

so, no of Arabic books=5×96=480 books

Answer 2

$\huge {\green{\bold{\underline{Solution:}}}}$

${\sf{\underline{Questions:}}}$

• The prices of a bike and T.V are in the ratio 3:2. If the bike costs 6000. Find the price of T.V.
• Ali and his sister’s ages are in the ratio 5 :4. If Ali is 45 years old, How old is his sister?
• In a school library, the ratio of French books to that of Arabic books is 4 : 5. If there are 384 French books, find the number of Arabic books in the library

${\sf{\underline{\underline{Solved \: Answers:}}}}$

$\bold{\underline{1st \: Answer:}}$

$\sf{\longrightarrow{The \: ratio \: of \: bike \: and \: TV \: is \: 3:2}}$

$\sf{\longrightarrow{3 = ₹6000}}$

$\sf{\longrightarrow{So, \: the \: price = (₹6000 ÷ 3)×2}}$

∴ The price of TV is ₹4000.

$\bold{\underline{2nd \: Answer:}}$

$\sf{\longrightarrow{The \: ratio \: of \: Ali \: and \: his \: sister's \: age \: is \: 5:4}}$

$\sf{\longrightarrow{5 = 45}}$

$\sf{\longrightarrow{So, \: the \: sister's\: age = (45 ÷ 5)×4}}$

∴ Ali's sister's age is 36 years.

$\bold{\underline{3rd \: Answer:}}$

$\sf{\longrightarrow{The \: ratio \: of \: French \: and \: Arabic \: books \: is \: 4:5}}$

$\sf{\longrightarrow{4 = 384}}$

$\sf{\longrightarrow{So, \: the \: price = (384÷4)×5}}$

∴ There are 480 Arabic books.