I) 3: 5 ii) 2: 10
2. there are 50 students in a class and 40% of them are boys. find the number
of boys and girls in the class.
3. 25% of vegetables in a store are cabbage. if there are 13 cabbages in the
store, then how many vegetables are there in the store altogether?
4. the price of a scooter was rs. 40,000 last year. it’s increased 20% this
year. what is the price now?
5. an item was marked as rs.150 but is sold for rs.100. what is the discount
and discount % ?
6. if 8% vat is included in the prices, find the original price of :
i) a soap bought for rs.35
ii) a shampoo bottle bought for rs.180
7. find the profit and profit% if c. p is rs.320 and s. p.is rs.384
8. a shop selling calculators offers 4% discount on all purchases. what does
a customer pay for a calculator whose marked price is rs.650.?

.there can be infinite values of m and n that can satisfy the above equation. for each value of m of m or n. there maybe infinite sets of solution for the above

step-by-step explanation:

nswer: a   y-axis

step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240