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answer of Q no 10
Let cousin's age be x
So, Raju's age will bex−19
After 5 years ratio of their ages will be= 3/2
So,
x+5
x−19+5= 3/2
x+5/x-14 =3/2
3x−42=2x+10
3x−2x=42+10
x=52
x−19=52−19=33
Therefor present age of Raju is 33 years and present age of his cousin is 52years.
Answer of Q no 11 a part
1kg almonds cost 323.50
So, 11.9kg almonds will cost 323.50 x 11.9 = 3849.65
So, it will cost ₹3849.65.
b)Let the number be x.
According to the question,
19−2x=11
2x=19−11
2x=8
x=4
Hence, this is the answer.
Answer of Q no 12 a part
45 – [38 – {60 ÷ 3 – (6 – 9 ÷ 3) ÷ 3}]
= 45 - [38 - {60 ÷ 3 - (6 - 3) ÷ 3}]
= 45 - [38 - {20 - 3 ÷ 3}]
= 45 - [38 - {20 - 1}]
= 45 - [38 - 19]
= 45 -19
= 26
b) I have not answer
Q no 13 a part
l have not answer
b part
calculate on calculator
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