2? Coz gotta carry forward for every digit in the ones, tens and hundred place.

I would choose 2 for the same reason. To work out the answer I would start with the ones. Only 1 and 2 would require regrouping, ruling out 3 and 4. Moving to the tens digit, only 2 would require regrouping (after carrying the 1 from adding the ones digit). Now we check the hundreds digit and see that would also require regrouping. Which confirms that the answer is 2.

182 ÷ [1/6 + 3/11 × (1 - 1/6)] = 462

Hi, the "remaining" is divisible by 5 (based on it being 5/6 of the initial total) and also divisible by 11 (based on the fraction 3/11), so the "remaining" is a multiple of 5x11 = 55. So the "remaining" is 55u and total is 66u. Given to Ming Teck is (1/6)x66u = 11u Harold is (3/11)x55 = 15u So in all, given away is 26u = 182, since getting the 182 makes it back to the original total. 1u = 182/26 = 7 66u = 66x7 = 462 (total at first).

You can refer to the solution below for details. :)

Can u explain it

1/6 + 3/11 × (1 - 1/6) This corresponds to the fraction given away. Since 182 is the amount given away, using 182 to divide by this fraction will give the total amount

Hi, 182/26 = 7, not 14.

Thank you for spotting the error. :)

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Thks vm

Hi. Refer to the explanation below for details. Dan gave Caleb $8 ---> Dan gave 40 x 20 cent coins to Caleb. BECAUSE Dan is left with 2/3 of the original number of coins ---> 1/3 number of coins was given to Caleb. THEREFORE, Dan gave 40 coins to Caleb ---> 1/3 number of coins was given to Caleb SO, Dan is left with 2/3 of his original coins, or 2 x 40 = 80 coins. --------------------------------------------------------------------------------------- Caleb has 1/3 of Dan's coins at first + another 1/3 given by Dan = 2/3 of Dan's coins at first. Caleb has 80 coins, which is the same as Dan. __________________________________________________ Same number of coins, different in value. Therefore, their difference in amount is (50 cents - 20 cents) x 80 coins = $24. :)

Thks for yr detailed explanation

Hi Shaoyang Brandon, while Caleb had 80 coins in the end, 40 of them were 50c and the other 40 were 20c, not all the same 50c. Correct answer is $12, as done by Raymond Ng.

Awareness of quantity vs value .

Typical qty x value question which some pupils are quite confused about how to draw the correct model

Thanks for pointing the error. So, it will be 40 x (50 cents - 20 cents) = $12

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