Sorry, I don't understand 48-24÷2 = 4BA cuz i tot is equal to 2y + area of rectangles. (Ie X-24 = y). Pls help

I assigned half the rectangle to each of x & y, so the difference remains the same

oic.Thanks Raymond Ng for yr prompt n detailed explanation.

5 units = 4 parts + 486 (eq 1) 3 units = 7 parts + 149 (eq 2) Making the parts of both eqns the same, (Eq1×7) 35 units = 28 parts + 3402 (eq3) (Eq2×4) 12 units = 28 parts + 596 (eq4) From here (eq3-eq4), 23 units = 2806 1 unit = 2806÷23=122 5 units = 122×5=610 (ans for part a) 610 = 4 parts + 486 4 parts = 610-486=12224 1 part = 124÷4=31 3 parts (7parts-4parts)=31×3=93 (ans for partb)

hope u can understand what i wrote: Avg of B n C is 150 D is 50 Avg of A B C D is 125

Got it! Thanks!

1/5 of the number is 20. So what is the number?

1/5 of a number (100) is 20. Thus 1/4 of 100 is 25. Thus answer is C (25)

B - 16 ?

Ans is 25, I thought is 1. Teach my son wrongly.😯

Thank Pauline Vong Nyit Lii for yr explanation, I got it and now able to explain to my son.

25

Denominator is 5 parts (draw 5 parts to represent the number) Shade one part since the numerator is 1. From here, 1 part = 20, 5 parts (number) = 5 x 20 = 100 Better to explain such qn in model drawing if ur kid is P4 n below. :)

Ans 25

25

Ans is 25. 1/5 is 20 so 1 whole will be 5x20 =100. 1/4 of 100 is 25.

Yes ans is 25 because need to know the value of the number first, ie 100. :)

Yes. Ans is C. 25

1/5 × y =20 Y= 20 ÷ 1/5 = 100 Therefore 1/4 × 100= 25

Since 4d = 3s, and her $ can buy 12d and 16s. Hence 12d can buy 9s. So she can buy a total of 16+9 = 25 stickers.

Thank you very much!😊