1. The weights of a red ball and a green ball are 72
gm and 96 gm respectively. The ratio of a green ball and a black ball is equal
to the ratio of the weight of a red ball and a green ball.
(a) Find the
ratio of a red ball and a green ball.
(b) Find the weight of a black ball.
(c) The total price of a red, a green and a black ball
is TK. 296. If the ratio of buying prices of red, green, and blackball is
equal to the ratio of their weight, find the buying price of red and green
ball.
2. The ratio of Acid and water in the 30-liter mixture is 7:3.
(a) Find out the amount of acid and water.
(b) If we mix 6 litre water and 12 litre acid in the mixture
what will be the ratio of water and acid?
(c) How much water is to mix in a mixture to make the ratio of
water and acid 7:3?
3. The ratio of weight of milk and water of a mixture is 5:6.
The ratio of weight of water and sugar in a mixture is 7:4 and the weight of
the mixture is 46.5 kg.
(a) Find out the weight of water and sugar.
(b) What will be the ratio of water, milk, and sugar if we mix
the two mixtures?
(c) How much sugar is to be added in 2nd mixture to
make the ratio is 32: 35?
4. The product of two
extreme identities is 2025 of a successive ratio of three terms and the first
value is 25.
(a) Find out the third value.
(b) Find out the successive ratio.
(c) Find out the 4th successive value of the ratio.
5. The ratio of the incomes of Ponir and Monir is 5:4. The ratio
of incomes of Monir and Tapon is 3:4.
(a) What is the successive ratio?
(b) Find the successive ratio of their income.
(c) If the incomes of ponir are Tk. 120, find the income of Monir
and Tapon.
6. The ratio of successful and unsuccessful students of a school
of 132 students is 9:2.
(a) Find out the amount of successful and unsuccessful students
of that school.
(b) If the number of successful students is increased by 4 more,
then what will be the ratio of successful and unsuccessful students?
(c) If each successful students get Tk. 250, find out the amount
of Tk.
7. Mr. Jamal and Somoresh babu works in a bulb factory. In the
factory 14600 bulbs are produced in 365 days. The ratio of their salary is 6:5,
total salary of them 16500 taka. After a year salary of Mr. Jamal and Somers
babu increases respectively 200 taka and 150 taka.
(a) What is the present salary of Mr. Jamal and Somoresh?
(b) How many bulbs are produced in 140 days in the factory?
(c) What will be the ratio of the salary of Mr. Jamal and Somoresh
babu after one year?
8. The ratio of income of A and B is 3:5 and that of
B and C is 2:3. The income of C is Tk. 120.
a. Express the 3:5 and 2:3 into mixed ratio.
b. Express the ratio of income of A, B, and C in
successive ratio. Determine the income of A.
c. Determine the total income of A, B, and C.
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