Find the ratio between the given quantities in
the lowest form. (364 cows and 455 cows).
a) 52 : 65
b) 4 : 5
c) 7 : 3
d) 9 : 12
Solution:364 : 455 (÷ Both by 7)
52 : 65 (÷ Both by 13) = 4 : 5 (Lowest form)
The age of Uzair is 10 years, 8 months and the age of Usman is 13 years, 4 months. What is the ratio between their ages in the lowest form?
a) 6 : 9
b) 7 : 5
c) 4 : 2
d) 4 : 5
Solution:Uzair 10 y, 8 m= 128 months
Usman 13y, 4 m= 160 months
128 : 160 = 6 time divide by 2 both
4 : 5
Saeeda earns Rs.85,000 and spends Rs. 51,000 in a year. Find the ratio of her income to expenditure.
a) 5 : 3
b) 7 : 9
c) 9 : 11
d) 12:14
Solution:85000 : 51,000 (3time divide by 2)
10625 : 6375 (3 time divide by 3)
85 : 51 (divide by 17)
5 : 3
If 25kg of rice costs Rs.250, find the cost of 45 kg rice.
a) 410
b) 415
c) 430
d) 450
Solution:(Direct proportion)
25 : 45 :: 250 : x
25x = 45 × 250 = 25x = 11250
x= 11250/25 = 450
5 : 3 :: x : 12 (what is the value of x)
a) 10
b) 15
c) 20
d) 36
Solution:3x = 60
Product of extremes = Product of means
x = 60/3 =20
20 : 9 :: 40 : x (what is the value of x)
a) 12
b) 14
c) 16
d) 18
Solution:20x = 360
Product of extremes = Product of means
x = 360/20 = 18
by at 2025-03-21 10:58:23